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Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV

The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$~TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\,\rightarrow\,J/\psi\,\gamma$ with...

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Detalles Bibliográficos
Autores principales:	Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alkhazov, G., Alvarez Cartelle, P., Alves Jr, A.A., Amato, S., Amhis, Y., Anderson, J., Appleby, R.B., Aquines Gutierrez, O., Archilli, F., Arrabito, L., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J.J., Bailey, D.S., Balagura, V., Baldini, W., Barlow, R.J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, Th., Bay, A., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Bernet, R., Bettler, M.O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjornstad, P.M., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T.J.V., Bozzi, C., Brambach, T., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N.H., Brown, H., Buchler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Cauet, Ch., Charles, M., Charpentier, Ph., Chiapolini, N., Ciba, K., Cid Vidal, X., Ciezarek, G., Clarke, P.E.L., Clemencic, M., Cliff, H.V., Closier, J., Coca, C., Coco, V., Cogan, J., Collins, P., Comerma-Montells, A., Constantin, F., Conti, G., Contu, A., Cook, A., Coombes, M., Corti, G., Cowan, G.A., Currie, R., D'Almagne, B., D'Ambrosio, C., David, P., David, P.N.Y., De Bonis, I., De Capua, S., De Cian, M., De Lorenzi, F., de Miranda, J.M., De Paula, L., De Simone, P., Decamp, D., Deckenhoff, M., Degaudenzi, H., Deissenroth, M., Del Buono, L., Deplano, C., Derkach, D., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Diniz Batista, P., Bonal, F.Domingo, Donleavy, S., Dordei, F., Dosil Suarez, A., Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., van Eijk, D., Eisele, F., Eisenhardt, S., Ekelhof, R., Eklund, L., Elsasser, Ch., Elsby, D., Esperante Pereira, D., Esteve, L., Falabella, A., Fanchini, E., Farber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Fernandez Albor, V., Ferro-Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Frank, M., Frei, C., Frosini, M., Furcas, S., Gallas Torreira, A., Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garnier, J-C., Garofoli, J., Garra Tico, J., Garrido, L., Gascon, D., Gaspar, C., Gauvin, N., Gersabeck, M., Gershon, T., Ghez, Ph., Gibson, V., Gligorov, V.V., Gobel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., Grabalosa Gandara, M., Graciani Diaz, R., Granado Cardoso, L.A., Grauges, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Haefeli, G., Haen, C., Haines, S.C., Hampson, T., Hansmann-Menzemer, S., Harji, R., Harnew, N., Harrison, J., Harrison, P.F., He, J., Heijne, V., Hennessy, K., Henrard, P., Hernando Morata, J.A., van Herwijnen, E., Hicks, E., Holubyev, K., Hopchev, P., Hulsbergen, W., Hunt, P., Huse, T., Huston, R.S., Hutchcroft, D., Hynds, D., Iakovenko, V., Ilten, P., Imong, J., Jacobsson, R., Jaeger, A., Jahjah Hussein, M., Jans, E., Jansen, F., Jaton, P., Jean-Marie, B., Jing, F., John, M., Johnson, D., Jones, C.R., Jost, B., Kaballo, M., Kandybei, S., Karacson, M., Karbach, T.M., Keaveney, J., Kenyon, I.R., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kim, Y.M., Knecht, M., Koppenburg, P., Kozlinskiy, A., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kruzelecki, K., Kucharczyk, M., Kvaratskheliya, T., La Thi, V.N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R.W., Lanciotti, E., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J.P., Lefevre, R., Leflat, A., Lefrancois, J., Leroy, O., Lesiak, T., Li, L., Li Gioi, L., Lieng, M., Liles, M., Lindner, R., Linn, C., Liu, B., Liu, G., Lopes, J.H., Lopez Asamar, E., Lopez-March, N., Lu, H., Luisier, J., Raighne, A.Mac, Machefert, F., Machikhiliyan, I.V., Maciuc, F., Maev, O., Magnin, J., Malde, S., Mamunur, R.M.D., Manca, G., Mancinelli, G., Mangiafave, N., Marconi, U., Marki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Martin Sanchez, A., Martinez Santos, D., Massafferri, A., Mathe, Z., Matteuzzi, C., Matveev, M., Maurice, E., Maynard, B., Mazurov, A., McGregor, G., McNulty, R., Mclean, C., Meissner, M., Merk, M., Merkel, J., Messi, R., Miglioranzi, S., Milanes, D.A., Minard, M.N., Molina Rodriguez, J., Monteil, S., Moran, D., Morawski, P., Mountain, R., Mous, I., Muheim, F., Muller, K., Muresan, R., Muryn, B., Muster, B., Musy, M., Mylroie-Smith, J., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Nedos, M., Needham, M., Neufeld, N., Nguyen-Mau, C., Nicol, M., Niess, V., Nikitin, N., Nomerotski, A., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Otalora Goicochea, J.M., Owen, P., Pal, K., Palacios, J., Palano, A., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C.J., Passaleva, G., Patel, G.D., Patel, M., Paterson, S.K., Patrick, G.N., Patrignani, C., Pavel-Nicorescu, C., Pazos Alvarez, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perego, D.L., Perez Trigo, E., Perez-Calero Yzquierdo, A., Perret, P., Perrin-Terrin, M., Pessina, G., Petrella, A., Petrolini, A., Phan, A., Picatoste Olloqui, E., Pie Valls, B., Pietrzyk, B., Pilar, T., Pinci, D., Plackett, R., Playfer, S., Plo Casasus, M., Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., du Pree, T., Prisciandaro, J., Pugatch, V., Puig Navarro, A., Qian, W., Rademacker, J.H., Rakotomiaramanana, B., Rangel, M.S., Raniuk, I., Raven, G., Redford, S., Reid, M.M., dos Reis, A.C., Ricciardi, S., Rinnert, K., Roa Romero, D.A., Robbe, P., Rodrigues, E., Rodrigues, F., Rodriguez Perez, P., Rogers, G.J., Roiser, S., Romanovsky, V., Rosello, M., Rouvinet, J., Ruf, T., Ruiz, H., Sabatino, G., Saborido Silva, J.J., Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sannino, M., Santacesaria, R., Santamarina Rios, C., Santinelli, R., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schleich, S., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M.H., Schwemmer, R., Sciascia, B., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shao, B., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Coutinho, R.Silva, Skwarnicki, T., Smith, A.C., Smith, N.A., Smith, E., Sobczak, K., Soler, F.J.P., Solomin, A., Soomro, F., Souza De Paula, B., Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Subbiah, V.K., Swientek, S., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Topp-Joergensen, S., Torr, N., Tournefier, E., Tran, M.T., Tsaregorodtsev, A., Tuning, N., Garcia, M.Ubeda, Ukleja, A., Urquijo, P., Uwer, U., Vagnoni, V., Valenti, G., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., Velthuis, J.J., Veltri, M., Viaud, B., Videau, I., Vilasis-Cardona, X., Visniakov, J., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Voss, H., Wandernoth, S., Wang, J., Ward, D.R., Watson, N.K., Webber, A.D., Websdale, D., Whitehead, M., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M.P., Williams, M., Wilson, F.F., Wishahi, J., Witek, M., Witzeling, W., Wotton, S.A., Wyllie, K., Xie, Y., Xing, F., Xing, Z., Yang, Z., Young, R., Yushchenko, O., Zavertyaev, M., Zhang, F., Zhang, L., Zhang, W.C., Zhang, Y., Zhelezov, A., Zhong, L., Zverev, E., Zvyagin, A.
Lenguaje:	eng
Publicado:	2012
Materias:	Particle Physics - Experiment
Acceso en línea:	https://dx.doi.org/10.1016/j.physletb.2012.06.077 http://cds.cern.ch/record/1421558

_version_	1780924176120414208
author	Aaij, R. Abellan Beteta, C. Adeva, B. Adinolfi, M. Adrover, C. Affolder, A. Ajaltouni, Z. Albrecht, J. Alessio, F. Alexander, M. Alkhazov, G. Alvarez Cartelle, P. Alves Jr, A.A. Amato, S. Amhis, Y. Anderson, J. Appleby, R.B. Aquines Gutierrez, O. Archilli, F. Arrabito, L. Artamonov, A. Artuso, M. Aslanides, E. Auriemma, G. Bachmann, S. Back, J.J. Bailey, D.S. Balagura, V. Baldini, W. Barlow, R.J. Barschel, C. Barsuk, S. Barter, W. Bates, A. Bauer, C. Bauer, Th. Bay, A. Bediaga, I. Belogurov, S. Belous, K. Belyaev, I. Ben-Haim, E. Benayoun, M. Bencivenni, G. Benson, S. Benton, J. Bernet, R. Bettler, M.O. van Beuzekom, M. Bien, A. Bifani, S. Bird, T. Bizzeti, A. Bjornstad, P.M. Blake, T. Blanc, F. Blanks, C. Blouw, J. Blusk, S. Bobrov, A. Bocci, V. Bondar, A. Bondar, N. Bonivento, W. Borghi, S. Borgia, A. Bowcock, T.J.V. Bozzi, C. Brambach, T. van den Brand, J. Bressieux, J. Brett, D. Britsch, M. Britton, T. Brook, N.H. Brown, H. Buchler-Germann, A. Burducea, I. Bursche, A. Buytaert, J. Cadeddu, S. Callot, O. Calvi, M. Calvo Gomez, M. Camboni, A. Campana, P. Carbone, A. Carboni, G. Cardinale, R. Cardini, A. Carson, L. Carvalho Akiba, K. Casse, G. Cattaneo, M. Cauet, Ch. Charles, M. Charpentier, Ph. Chiapolini, N. Ciba, K. Cid Vidal, X. Ciezarek, G. Clarke, P.E.L. Clemencic, M. Cliff, H.V. Closier, J. Coca, C. Coco, V. Cogan, J. Collins, P. Comerma-Montells, A. Constantin, F. Conti, G. Contu, A. Cook, A. Coombes, M. Corti, G. Cowan, G.A. Currie, R. D'Almagne, B. D'Ambrosio, C. David, P. David, P.N.Y. De Bonis, I. De Capua, S. De Cian, M. De Lorenzi, F. de Miranda, J.M. De Paula, L. De Simone, P. Decamp, D. Deckenhoff, M. Degaudenzi, H. Deissenroth, M. Del Buono, L. Deplano, C. Derkach, D. Deschamps, O. Dettori, F. Dickens, J. Dijkstra, H. Diniz Batista, P. Bonal, F.Domingo Donleavy, S. Dordei, F. Dosil Suarez, A. Dossett, D. Dovbnya, A. Dupertuis, F. Dzhelyadin, R. Dziurda, A. Easo, S. Egede, U. Egorychev, V. Eidelman, S. van Eijk, D. Eisele, F. Eisenhardt, S. Ekelhof, R. Eklund, L. Elsasser, Ch. Elsby, D. Esperante Pereira, D. Esteve, L. Falabella, A. Fanchini, E. Farber, C. Fardell, G. Farinelli, C. Farry, S. Fave, V. Fernandez Albor, V. Ferro-Luzzi, M. Filippov, S. Fitzpatrick, C. Fontana, M. Fontanelli, F. Forty, R. Frank, M. Frei, C. Frosini, M. Furcas, S. Gallas Torreira, A. Galli, D. Gandelman, M. Gandini, P. Gao, Y. Garnier, J-C. Garofoli, J. Garra Tico, J. Garrido, L. Gascon, D. Gaspar, C. Gauvin, N. Gersabeck, M. Gershon, T. Ghez, Ph. Gibson, V. Gligorov, V.V. Gobel, C. Golubkov, D. Golutvin, A. Gomes, A. Gordon, H. Grabalosa Gandara, M. Graciani Diaz, R. Granado Cardoso, L.A. Grauges, E. Graziani, G. Grecu, A. Greening, E. Gregson, S. Gui, B. Gushchin, E. Guz, Yu. Gys, T. Haefeli, G. Haen, C. Haines, S.C. Hampson, T. Hansmann-Menzemer, S. Harji, R. Harnew, N. Harrison, J. Harrison, P.F. He, J. Heijne, V. Hennessy, K. Henrard, P. Hernando Morata, J.A. van Herwijnen, E. Hicks, E. Holubyev, K. Hopchev, P. Hulsbergen, W. Hunt, P. Huse, T. Huston, R.S. Hutchcroft, D. Hynds, D. Iakovenko, V. Ilten, P. Imong, J. Jacobsson, R. Jaeger, A. Jahjah Hussein, M. Jans, E. Jansen, F. Jaton, P. Jean-Marie, B. Jing, F. John, M. Johnson, D. Jones, C.R. Jost, B. Kaballo, M. Kandybei, S. Karacson, M. Karbach, T.M. Keaveney, J. Kenyon, I.R. Kerzel, U. Ketel, T. Keune, A. Khanji, B. Kim, Y.M. Knecht, M. Koppenburg, P. Kozlinskiy, A. Kravchuk, L. Kreplin, K. Kreps, M. Krocker, G. Krokovny, P. Kruse, F. Kruzelecki, K. Kucharczyk, M. Kvaratskheliya, T. La Thi, V.N. Lacarrere, D. Lafferty, G. Lai, A. Lambert, D. Lambert, R.W. Lanciotti, E. Lanfranchi, G. Langenbruch, C. Latham, T. Lazzeroni, C. Le Gac, R. van Leerdam, J. Lees, J.P. Lefevre, R. Leflat, A. Lefrancois, J. Leroy, O. Lesiak, T. Li, L. Li Gioi, L. Lieng, M. Liles, M. Lindner, R. Linn, C. Liu, B. Liu, G. Lopes, J.H. Lopez Asamar, E. Lopez-March, N. Lu, H. Luisier, J. Raighne, A.Mac Machefert, F. Machikhiliyan, I.V. Maciuc, F. Maev, O. Magnin, J. Malde, S. Mamunur, R.M.D. Manca, G. Mancinelli, G. Mangiafave, N. Marconi, U. Marki, R. Marks, J. Martellotti, G. Martens, A. Martin, L. Martin Sanchez, A. Martinez Santos, D. Massafferri, A. Mathe, Z. Matteuzzi, C. Matveev, M. Maurice, E. Maynard, B. Mazurov, A. McGregor, G. McNulty, R. Mclean, C. Meissner, M. Merk, M. Merkel, J. Messi, R. Miglioranzi, S. Milanes, D.A. Minard, M.N. Molina Rodriguez, J. Monteil, S. Moran, D. Morawski, P. Mountain, R. Mous, I. Muheim, F. Muller, K. Muresan, R. Muryn, B. Muster, B. Musy, M. Mylroie-Smith, J. Naik, P. Nakada, T. Nandakumar, R. Nasteva, I. Nedos, M. Needham, M. Neufeld, N. Nguyen-Mau, C. Nicol, M. Niess, V. Nikitin, N. Nomerotski, A. Novoselov, A. Oblakowska-Mucha, A. Obraztsov, V. Oggero, S. Ogilvy, S. Okhrimenko, O. Oldeman, R. Orlandea, M. Otalora Goicochea, J.M. Owen, P. Pal, K. Palacios, J. Palano, A. Palutan, M. Panman, J. Papanestis, A. Pappagallo, M. Parkes, C. Parkinson, C.J. Passaleva, G. Patel, G.D. Patel, M. Paterson, S.K. Patrick, G.N. Patrignani, C. Pavel-Nicorescu, C. Pazos Alvarez, A. Pellegrino, A. Penso, G. Pepe Altarelli, M. Perazzini, S. Perego, D.L. Perez Trigo, E. Perez-Calero Yzquierdo, A. Perret, P. Perrin-Terrin, M. Pessina, G. Petrella, A. Petrolini, A. Phan, A. Picatoste Olloqui, E. Pie Valls, B. Pietrzyk, B. Pilar, T. Pinci, D. Plackett, R. Playfer, S. Plo Casasus, M. Polok, G. Poluektov, A. Polycarpo, E. Popov, D. Popovici, B. Potterat, C. Powell, A. du Pree, T. Prisciandaro, J. Pugatch, V. Puig Navarro, A. Qian, W. Rademacker, J.H. Rakotomiaramanana, B. Rangel, M.S. Raniuk, I. Raven, G. Redford, S. Reid, M.M. dos Reis, A.C. Ricciardi, S. Rinnert, K. Roa Romero, D.A. Robbe, P. Rodrigues, E. Rodrigues, F. Rodriguez Perez, P. Rogers, G.J. Roiser, S. Romanovsky, V. Rosello, M. Rouvinet, J. Ruf, T. Ruiz, H. Sabatino, G. Saborido Silva, J.J. Sagidova, N. Sail, P. Saitta, B. Salzmann, C. Sannino, M. Santacesaria, R. Santamarina Rios, C. Santinelli, R. Santovetti, E. Sapunov, M. Sarti, A. Satriano, C. Satta, A. Savrie, M. Savrina, D. Schaack, P. Schiller, M. Schleich, S. Schlupp, M. Schmelling, M. Schmidt, B. Schneider, O. Schopper, A. Schune, M.H. Schwemmer, R. Sciascia, B. Sciubba, A. Seco, M. Semennikov, A. Senderowska, K. Sepp, I. Serra, N. Serrano, J. Seyfert, P. Shao, B. Shapkin, M. Shapoval, I. Shatalov, P. Shcheglov, Y. Shears, T. Shekhtman, L. Shevchenko, O. Shevchenko, V. Shires, A. Coutinho, R.Silva Skwarnicki, T. Smith, A.C. Smith, N.A. Smith, E. Sobczak, K. Soler, F.J.P. Solomin, A. Soomro, F. Souza De Paula, B. Spaan, B. Sparkes, A. Spradlin, P. Stagni, F. Stahl, S. Steinkamp, O. Stoica, S. Stone, S. Storaci, B. Straticiuc, M. Straumann, U. Subbiah, V.K. Swientek, S. Szczekowski, M. Szczypka, P. Szumlak, T. T'Jampens, S. Teodorescu, E. Teubert, F. Thomas, C. Thomas, E. van Tilburg, J. Tisserand, V. Tobin, M. Topp-Joergensen, S. Torr, N. Tournefier, E. Tran, M.T. Tsaregorodtsev, A. Tuning, N. Garcia, M.Ubeda Ukleja, A. Urquijo, P. Uwer, U. Vagnoni, V. Valenti, G. Vazquez Gomez, R. Vazquez Regueiro, P. Vecchi, S. Velthuis, J.J. Veltri, M. Viaud, B. Videau, I. Vilasis-Cardona, X. Visniakov, J. Vollhardt, A. Volyanskyy, D. Voong, D. Vorobyev, A. Voss, H. Wandernoth, S. Wang, J. Ward, D.R. Watson, N.K. Webber, A.D. Websdale, D. Whitehead, M. Wiedner, D. Wiggers, L. Wilkinson, G. Williams, M.P. Williams, M. Wilson, F.F. Wishahi, J. Witek, M. Witzeling, W. Wotton, S.A. Wyllie, K. Xie, Y. Xing, F. Xing, Z. Yang, Z. Young, R. Yushchenko, O. Zavertyaev, M. Zhang, F. Zhang, L. Zhang, W.C. Zhang, Y. Zhelezov, A. Zhong, L. Zverev, E. Zvyagin, A.
author_facet	Aaij, R. Abellan Beteta, C. Adeva, B. Adinolfi, M. Adrover, C. Affolder, A. Ajaltouni, Z. Albrecht, J. Alessio, F. Alexander, M. Alkhazov, G. Alvarez Cartelle, P. Alves Jr, A.A. Amato, S. Amhis, Y. Anderson, J. Appleby, R.B. Aquines Gutierrez, O. Archilli, F. Arrabito, L. Artamonov, A. Artuso, M. Aslanides, E. Auriemma, G. Bachmann, S. Back, J.J. Bailey, D.S. Balagura, V. Baldini, W. Barlow, R.J. Barschel, C. Barsuk, S. Barter, W. Bates, A. Bauer, C. Bauer, Th. Bay, A. Bediaga, I. Belogurov, S. Belous, K. Belyaev, I. Ben-Haim, E. Benayoun, M. Bencivenni, G. Benson, S. Benton, J. Bernet, R. Bettler, M.O. van Beuzekom, M. Bien, A. Bifani, S. Bird, T. Bizzeti, A. Bjornstad, P.M. Blake, T. Blanc, F. Blanks, C. Blouw, J. Blusk, S. Bobrov, A. Bocci, V. Bondar, A. Bondar, N. Bonivento, W. Borghi, S. Borgia, A. Bowcock, T.J.V. Bozzi, C. Brambach, T. van den Brand, J. Bressieux, J. Brett, D. Britsch, M. Britton, T. Brook, N.H. Brown, H. Buchler-Germann, A. Burducea, I. Bursche, A. Buytaert, J. Cadeddu, S. Callot, O. Calvi, M. Calvo Gomez, M. Camboni, A. Campana, P. Carbone, A. Carboni, G. Cardinale, R. Cardini, A. Carson, L. Carvalho Akiba, K. Casse, G. Cattaneo, M. Cauet, Ch. Charles, M. Charpentier, Ph. Chiapolini, N. Ciba, K. Cid Vidal, X. Ciezarek, G. Clarke, P.E.L. Clemencic, M. Cliff, H.V. Closier, J. Coca, C. Coco, V. Cogan, J. Collins, P. Comerma-Montells, A. Constantin, F. Conti, G. Contu, A. Cook, A. Coombes, M. Corti, G. Cowan, G.A. Currie, R. D'Almagne, B. D'Ambrosio, C. David, P. David, P.N.Y. De Bonis, I. De Capua, S. De Cian, M. De Lorenzi, F. de Miranda, J.M. De Paula, L. De Simone, P. Decamp, D. Deckenhoff, M. Degaudenzi, H. Deissenroth, M. Del Buono, L. Deplano, C. Derkach, D. Deschamps, O. Dettori, F. Dickens, J. Dijkstra, H. Diniz Batista, P. Bonal, F.Domingo Donleavy, S. Dordei, F. Dosil Suarez, A. Dossett, D. Dovbnya, A. Dupertuis, F. Dzhelyadin, R. Dziurda, A. Easo, S. Egede, U. Egorychev, V. Eidelman, S. van Eijk, D. Eisele, F. Eisenhardt, S. Ekelhof, R. Eklund, L. Elsasser, Ch. Elsby, D. Esperante Pereira, D. Esteve, L. Falabella, A. Fanchini, E. Farber, C. Fardell, G. Farinelli, C. Farry, S. Fave, V. Fernandez Albor, V. Ferro-Luzzi, M. Filippov, S. Fitzpatrick, C. Fontana, M. Fontanelli, F. Forty, R. Frank, M. Frei, C. Frosini, M. Furcas, S. Gallas Torreira, A. Galli, D. Gandelman, M. Gandini, P. Gao, Y. Garnier, J-C. Garofoli, J. Garra Tico, J. Garrido, L. Gascon, D. Gaspar, C. Gauvin, N. Gersabeck, M. Gershon, T. Ghez, Ph. Gibson, V. Gligorov, V.V. Gobel, C. Golubkov, D. Golutvin, A. Gomes, A. Gordon, H. Grabalosa Gandara, M. Graciani Diaz, R. Granado Cardoso, L.A. Grauges, E. Graziani, G. Grecu, A. Greening, E. Gregson, S. Gui, B. Gushchin, E. Guz, Yu. Gys, T. Haefeli, G. Haen, C. Haines, S.C. Hampson, T. Hansmann-Menzemer, S. Harji, R. Harnew, N. Harrison, J. Harrison, P.F. He, J. Heijne, V. Hennessy, K. Henrard, P. Hernando Morata, J.A. van Herwijnen, E. Hicks, E. Holubyev, K. Hopchev, P. Hulsbergen, W. Hunt, P. Huse, T. Huston, R.S. Hutchcroft, D. Hynds, D. Iakovenko, V. Ilten, P. Imong, J. Jacobsson, R. Jaeger, A. Jahjah Hussein, M. Jans, E. Jansen, F. Jaton, P. Jean-Marie, B. Jing, F. John, M. Johnson, D. Jones, C.R. Jost, B. Kaballo, M. Kandybei, S. Karacson, M. Karbach, T.M. Keaveney, J. Kenyon, I.R. Kerzel, U. Ketel, T. Keune, A. Khanji, B. Kim, Y.M. Knecht, M. Koppenburg, P. Kozlinskiy, A. Kravchuk, L. Kreplin, K. Kreps, M. Krocker, G. Krokovny, P. Kruse, F. Kruzelecki, K. Kucharczyk, M. Kvaratskheliya, T. La Thi, V.N. Lacarrere, D. Lafferty, G. Lai, A. Lambert, D. Lambert, R.W. Lanciotti, E. Lanfranchi, G. Langenbruch, C. Latham, T. Lazzeroni, C. Le Gac, R. van Leerdam, J. Lees, J.P. Lefevre, R. Leflat, A. Lefrancois, J. Leroy, O. Lesiak, T. Li, L. Li Gioi, L. Lieng, M. Liles, M. Lindner, R. Linn, C. Liu, B. Liu, G. Lopes, J.H. Lopez Asamar, E. Lopez-March, N. Lu, H. Luisier, J. Raighne, A.Mac Machefert, F. Machikhiliyan, I.V. Maciuc, F. Maev, O. Magnin, J. Malde, S. Mamunur, R.M.D. Manca, G. Mancinelli, G. Mangiafave, N. Marconi, U. Marki, R. Marks, J. Martellotti, G. Martens, A. Martin, L. Martin Sanchez, A. Martinez Santos, D. Massafferri, A. Mathe, Z. Matteuzzi, C. Matveev, M. Maurice, E. Maynard, B. Mazurov, A. McGregor, G. McNulty, R. Mclean, C. Meissner, M. Merk, M. Merkel, J. Messi, R. Miglioranzi, S. Milanes, D.A. Minard, M.N. Molina Rodriguez, J. Monteil, S. Moran, D. Morawski, P. Mountain, R. Mous, I. Muheim, F. Muller, K. Muresan, R. Muryn, B. Muster, B. Musy, M. Mylroie-Smith, J. Naik, P. Nakada, T. Nandakumar, R. Nasteva, I. Nedos, M. Needham, M. Neufeld, N. Nguyen-Mau, C. Nicol, M. Niess, V. Nikitin, N. Nomerotski, A. Novoselov, A. Oblakowska-Mucha, A. Obraztsov, V. Oggero, S. Ogilvy, S. Okhrimenko, O. Oldeman, R. Orlandea, M. Otalora Goicochea, J.M. Owen, P. Pal, K. Palacios, J. Palano, A. Palutan, M. Panman, J. Papanestis, A. Pappagallo, M. Parkes, C. Parkinson, C.J. Passaleva, G. Patel, G.D. Patel, M. Paterson, S.K. Patrick, G.N. Patrignani, C. Pavel-Nicorescu, C. Pazos Alvarez, A. Pellegrino, A. Penso, G. Pepe Altarelli, M. Perazzini, S. Perego, D.L. Perez Trigo, E. Perez-Calero Yzquierdo, A. Perret, P. Perrin-Terrin, M. Pessina, G. Petrella, A. Petrolini, A. Phan, A. Picatoste Olloqui, E. Pie Valls, B. Pietrzyk, B. Pilar, T. Pinci, D. Plackett, R. Playfer, S. Plo Casasus, M. Polok, G. Poluektov, A. Polycarpo, E. Popov, D. Popovici, B. Potterat, C. Powell, A. du Pree, T. Prisciandaro, J. Pugatch, V. Puig Navarro, A. Qian, W. Rademacker, J.H. Rakotomiaramanana, B. Rangel, M.S. Raniuk, I. Raven, G. Redford, S. Reid, M.M. dos Reis, A.C. Ricciardi, S. Rinnert, K. Roa Romero, D.A. Robbe, P. Rodrigues, E. Rodrigues, F. Rodriguez Perez, P. Rogers, G.J. Roiser, S. Romanovsky, V. Rosello, M. Rouvinet, J. Ruf, T. Ruiz, H. Sabatino, G. Saborido Silva, J.J. Sagidova, N. Sail, P. Saitta, B. Salzmann, C. Sannino, M. Santacesaria, R. Santamarina Rios, C. Santinelli, R. Santovetti, E. Sapunov, M. Sarti, A. Satriano, C. Satta, A. Savrie, M. Savrina, D. Schaack, P. Schiller, M. Schleich, S. Schlupp, M. Schmelling, M. Schmidt, B. Schneider, O. Schopper, A. Schune, M.H. Schwemmer, R. Sciascia, B. Sciubba, A. Seco, M. Semennikov, A. Senderowska, K. Sepp, I. Serra, N. Serrano, J. Seyfert, P. Shao, B. Shapkin, M. Shapoval, I. Shatalov, P. Shcheglov, Y. Shears, T. Shekhtman, L. Shevchenko, O. Shevchenko, V. Shires, A. Coutinho, R.Silva Skwarnicki, T. Smith, A.C. Smith, N.A. Smith, E. Sobczak, K. Soler, F.J.P. Solomin, A. Soomro, F. Souza De Paula, B. Spaan, B. Sparkes, A. Spradlin, P. Stagni, F. Stahl, S. Steinkamp, O. Stoica, S. Stone, S. Storaci, B. Straticiuc, M. Straumann, U. Subbiah, V.K. Swientek, S. Szczekowski, M. Szczypka, P. Szumlak, T. T'Jampens, S. Teodorescu, E. Teubert, F. Thomas, C. Thomas, E. van Tilburg, J. Tisserand, V. Tobin, M. Topp-Joergensen, S. Torr, N. Tournefier, E. Tran, M.T. Tsaregorodtsev, A. Tuning, N. Garcia, M.Ubeda Ukleja, A. Urquijo, P. Uwer, U. Vagnoni, V. Valenti, G. Vazquez Gomez, R. Vazquez Regueiro, P. Vecchi, S. Velthuis, J.J. Veltri, M. Viaud, B. Videau, I. Vilasis-Cardona, X. Visniakov, J. Vollhardt, A. Volyanskyy, D. Voong, D. Vorobyev, A. Voss, H. Wandernoth, S. Wang, J. Ward, D.R. Watson, N.K. Webber, A.D. Websdale, D. Whitehead, M. Wiedner, D. Wiggers, L. Wilkinson, G. Williams, M.P. Williams, M. Wilson, F.F. Wishahi, J. Witek, M. Witzeling, W. Wotton, S.A. Wyllie, K. Xie, Y. Xing, F. Xing, Z. Yang, Z. Young, R. Yushchenko, O. Zavertyaev, M. Zhang, F. Zhang, L. Zhang, W.C. Zhang, Y. Zhelezov, A. Zhong, L. Zverev, E. Zvyagin, A.
author_sort	Aaij, R.
collection	CERN
description	The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$~TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\,\rightarrow\,J/\psi\,\gamma$ with $J/\psi\,\rightarrow\,\mu^+\,\mu^-$ using 36~$\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})\,/\,\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15~GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.
id	cern-1422205
institution	Organización Europea para la Investigación Nuclear
language	eng
publishDate	2012
record_format	invenio
spelling	cern-14222052023-04-06T02:16:10Zdoi:10.1016/j.physletb.2012.06.077http://cds.cern.ch/record/1421558engAaij, R.Abellan Beteta, C.Adeva, B.Adinolfi, M.Adrover, C.Affolder, A.Ajaltouni, Z.Albrecht, J.Alessio, F.Alexander, M.Alkhazov, G.Alvarez Cartelle, P.Alves Jr, A.A.Amato, S.Amhis, Y.Anderson, J.Appleby, R.B.Aquines Gutierrez, O.Archilli, F.Arrabito, L.Artamonov, A.Artuso, M.Aslanides, E.Auriemma, G.Bachmann, S.Back, J.J.Bailey, D.S.Balagura, V.Baldini, W.Barlow, R.J.Barschel, C.Barsuk, S.Barter, W.Bates, A.Bauer, C.Bauer, Th.Bay, A.Bediaga, I.Belogurov, S.Belous, K.Belyaev, I.Ben-Haim, E.Benayoun, M.Bencivenni, G.Benson, S.Benton, J.Bernet, R.Bettler, M.O.van Beuzekom, M.Bien, A.Bifani, S.Bird, T.Bizzeti, A.Bjornstad, P.M.Blake, T.Blanc, F.Blanks, C.Blouw, J.Blusk, S.Bobrov, A.Bocci, V.Bondar, A.Bondar, N.Bonivento, W.Borghi, S.Borgia, A.Bowcock, T.J.V.Bozzi, C.Brambach, T.van den Brand, J.Bressieux, J.Brett, D.Britsch, M.Britton, T.Brook, N.H.Brown, H.Buchler-Germann, A.Burducea, I.Bursche, A.Buytaert, J.Cadeddu, S.Callot, O.Calvi, M.Calvo Gomez, M.Camboni, A.Campana, P.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carson, L.Carvalho Akiba, K.Casse, G.Cattaneo, M.Cauet, Ch.Charles, M.Charpentier, Ph.Chiapolini, N.Ciba, K.Cid Vidal, X.Ciezarek, G.Clarke, P.E.L.Clemencic, M.Cliff, H.V.Closier, J.Coca, C.Coco, V.Cogan, J.Collins, P.Comerma-Montells, A.Constantin, F.Conti, G.Contu, A.Cook, A.Coombes, M.Corti, G.Cowan, G.A.Currie, R.D'Almagne, B.D'Ambrosio, C.David, P.David, P.N.Y.De Bonis, I.De Capua, S.De Cian, M.De Lorenzi, F.de Miranda, J.M.De Paula, L.De Simone, P.Decamp, D.Deckenhoff, M.Degaudenzi, H.Deissenroth, M.Del Buono, L.Deplano, C.Derkach, D.Deschamps, O.Dettori, F.Dickens, J.Dijkstra, H.Diniz Batista, P.Bonal, F.DomingoDonleavy, S.Dordei, F.Dosil Suarez, A.Dossett, D.Dovbnya, A.Dupertuis, F.Dzhelyadin, R.Dziurda, A.Easo, S.Egede, U.Egorychev, V.Eidelman, S.van Eijk, D.Eisele, F.Eisenhardt, S.Ekelhof, R.Eklund, L.Elsasser, Ch.Elsby, D.Esperante Pereira, D.Esteve, L.Falabella, A.Fanchini, E.Farber, C.Fardell, G.Farinelli, C.Farry, S.Fave, V.Fernandez Albor, V.Ferro-Luzzi, M.Filippov, S.Fitzpatrick, C.Fontana, M.Fontanelli, F.Forty, R.Frank, M.Frei, C.Frosini, M.Furcas, S.Gallas Torreira, A.Galli, D.Gandelman, M.Gandini, P.Gao, Y.Garnier, J-C.Garofoli, J.Garra Tico, J.Garrido, L.Gascon, D.Gaspar, C.Gauvin, N.Gersabeck, M.Gershon, T.Ghez, Ph.Gibson, V.Gligorov, V.V.Gobel, C.Golubkov, D.Golutvin, A.Gomes, A.Gordon, H.Grabalosa Gandara, M.Graciani Diaz, R.Granado Cardoso, L.A.Grauges, E.Graziani, G.Grecu, A.Greening, E.Gregson, S.Gui, B.Gushchin, E.Guz, Yu.Gys, T.Haefeli, G.Haen, C.Haines, S.C.Hampson, T.Hansmann-Menzemer, S.Harji, R.Harnew, N.Harrison, J.Harrison, P.F.He, J.Heijne, V.Hennessy, K.Henrard, P.Hernando Morata, J.A.van Herwijnen, E.Hicks, E.Holubyev, K.Hopchev, P.Hulsbergen, W.Hunt, P.Huse, T.Huston, R.S.Hutchcroft, D.Hynds, D.Iakovenko, V.Ilten, P.Imong, J.Jacobsson, R.Jaeger, A.Jahjah Hussein, M.Jans, E.Jansen, F.Jaton, P.Jean-Marie, B.Jing, F.John, M.Johnson, D.Jones, C.R.Jost, B.Kaballo, M.Kandybei, S.Karacson, M.Karbach, T.M.Keaveney, J.Kenyon, I.R.Kerzel, U.Ketel, T.Keune, A.Khanji, B.Kim, Y.M.Knecht, M.Koppenburg, P.Kozlinskiy, A.Kravchuk, L.Kreplin, K.Kreps, M.Krocker, G.Krokovny, P.Kruse, F.Kruzelecki, K.Kucharczyk, M.Kvaratskheliya, T.La Thi, V.N.Lacarrere, D.Lafferty, G.Lai, A.Lambert, D.Lambert, R.W.Lanciotti, E.Lanfranchi, G.Langenbruch, C.Latham, T.Lazzeroni, C.Le Gac, R.van Leerdam, J.Lees, J.P.Lefevre, R.Leflat, A.Lefrancois, J.Leroy, O.Lesiak, T.Li, L.Li Gioi, L.Lieng, M.Liles, M.Lindner, R.Linn, C.Liu, B.Liu, G.Lopes, J.H.Lopez Asamar, E.Lopez-March, N.Lu, H.Luisier, J.Raighne, A.MacMachefert, F.Machikhiliyan, I.V.Maciuc, F.Maev, O.Magnin, J.Malde, S.Mamunur, R.M.D.Manca, G.Mancinelli, G.Mangiafave, N.Marconi, U.Marki, R.Marks, J.Martellotti, G.Martens, A.Martin, L.Martin Sanchez, A.Martinez Santos, D.Massafferri, A.Mathe, Z.Matteuzzi, C.Matveev, M.Maurice, E.Maynard, B.Mazurov, A.McGregor, G.McNulty, R.Mclean, C.Meissner, M.Merk, M.Merkel, J.Messi, R.Miglioranzi, S.Milanes, D.A.Minard, M.N.Molina Rodriguez, J.Monteil, S.Moran, D.Morawski, P.Mountain, R.Mous, I.Muheim, F.Muller, K.Muresan, R.Muryn, B.Muster, B.Musy, M.Mylroie-Smith, J.Naik, P.Nakada, T.Nandakumar, R.Nasteva, I.Nedos, M.Needham, M.Neufeld, N.Nguyen-Mau, C.Nicol, M.Niess, V.Nikitin, N.Nomerotski, A.Novoselov, A.Oblakowska-Mucha, A.Obraztsov, V.Oggero, S.Ogilvy, S.Okhrimenko, O.Oldeman, R.Orlandea, M.Otalora Goicochea, J.M.Owen, P.Pal, K.Palacios, J.Palano, A.Palutan, M.Panman, J.Papanestis, A.Pappagallo, M.Parkes, C.Parkinson, C.J.Passaleva, G.Patel, G.D.Patel, M.Paterson, S.K.Patrick, G.N.Patrignani, C.Pavel-Nicorescu, C.Pazos Alvarez, A.Pellegrino, A.Penso, G.Pepe Altarelli, M.Perazzini, S.Perego, D.L.Perez Trigo, E.Perez-Calero Yzquierdo, A.Perret, P.Perrin-Terrin, M.Pessina, G.Petrella, A.Petrolini, A.Phan, A.Picatoste Olloqui, E.Pie Valls, B.Pietrzyk, B.Pilar, T.Pinci, D.Plackett, R.Playfer, S.Plo Casasus, M.Polok, G.Poluektov, A.Polycarpo, E.Popov, D.Popovici, B.Potterat, C.Powell, A.du Pree, T.Prisciandaro, J.Pugatch, V.Puig Navarro, A.Qian, W.Rademacker, J.H.Rakotomiaramanana, B.Rangel, M.S.Raniuk, I.Raven, G.Redford, S.Reid, M.M.dos Reis, A.C.Ricciardi, S.Rinnert, K.Roa Romero, D.A.Robbe, P.Rodrigues, E.Rodrigues, F.Rodriguez Perez, P.Rogers, G.J.Roiser, S.Romanovsky, V.Rosello, M.Rouvinet, J.Ruf, T.Ruiz, H.Sabatino, G.Saborido Silva, J.J.Sagidova, N.Sail, P.Saitta, B.Salzmann, C.Sannino, M.Santacesaria, R.Santamarina Rios, C.Santinelli, R.Santovetti, E.Sapunov, M.Sarti, A.Satriano, C.Satta, A.Savrie, M.Savrina, D.Schaack, P.Schiller, M.Schleich, S.Schlupp, M.Schmelling, M.Schmidt, B.Schneider, O.Schopper, A.Schune, M.H.Schwemmer, R.Sciascia, B.Sciubba, A.Seco, M.Semennikov, A.Senderowska, K.Sepp, I.Serra, N.Serrano, J.Seyfert, P.Shao, B.Shapkin, M.Shapoval, I.Shatalov, P.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, O.Shevchenko, V.Shires, A.Coutinho, R.SilvaSkwarnicki, T.Smith, A.C.Smith, N.A.Smith, E.Sobczak, K.Soler, F.J.P.Solomin, A.Soomro, F.Souza De Paula, B.Spaan, B.Sparkes, A.Spradlin, P.Stagni, F.Stahl, S.Steinkamp, O.Stoica, S.Stone, S.Storaci, B.Straticiuc, M.Straumann, U.Subbiah, V.K.Swientek, S.Szczekowski, M.Szczypka, P.Szumlak, T.T'Jampens, S.Teodorescu, E.Teubert, F.Thomas, C.Thomas, E.van Tilburg, J.Tisserand, V.Tobin, M.Topp-Joergensen, S.Torr, N.Tournefier, E.Tran, M.T.Tsaregorodtsev, A.Tuning, N.Garcia, M.UbedaUkleja, A.Urquijo, P.Uwer, U.Vagnoni, V.Valenti, G.Vazquez Gomez, R.Vazquez Regueiro, P.Vecchi, S.Velthuis, J.J.Veltri, M.Viaud, B.Videau, I.Vilasis-Cardona, X.Visniakov, J.Vollhardt, A.Volyanskyy, D.Voong, D.Vorobyev, A.Voss, H.Wandernoth, S.Wang, J.Ward, D.R.Watson, N.K.Webber, A.D.Websdale, D.Whitehead, M.Wiedner, D.Wiggers, L.Wilkinson, G.Williams, M.P.Williams, M.Wilson, F.F.Wishahi, J.Witek, M.Witzeling, W.Wotton, S.A.Wyllie, K.Xie, Y.Xing, F.Xing, Z.Yang, Z.Young, R.Yushchenko, O.Zavertyaev, M.Zhang, F.Zhang, L.Zhang, W.C.Zhang, Y.Zhelezov, A.Zhong, L.Zverev, E.Zvyagin, A.Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeVParticle Physics - ExperimentThe prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$~TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\,\rightarrow\,J/\psi\,\gamma$ with $J/\psi\,\rightarrow\,\mu^+\,\mu^-$ using 36~$\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})\,/\,\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15~GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two $\chi_c$ spin states, $\sigma(\chi_{c2})/\sigma(\chi_{c1})$, has been determined as a function of the $J/\psi$ transverse momentum, $p_{\mathrm{T}}^{J/\psi}$, in the range from 2 to 15 GeV/$c$. The results are in agreement with the next-to-leading order non-relativistic QCD model at high $p_{\mathrm{T}}^{J/\psi}$ and lie consistently above the pure leading-order colour singlet prediction.The prompt production of the charmonium χc1 and χc2 mesons has been studied in proton–proton collisions at the Large Hadron Collider at a centre-of-mass energy of s=7 TeV . The χc mesons are identified through their decays χc→J/ψγ with J/ψ→μ+μ− using 36 pb−1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two χc spin states, σ(χc2)/σ(χc1) , has been determined as a function of the J/ψ transverse momentum, pTJ/ψ , in the range from 2 to 15 GeV/ c . The results are in agreement with the next-to-leading order non-relativistic QCD model at high pTJ/ψ and lie consistently above the pure leading-order colour-singlet prediction.arXiv:1202.1080LHCB-PAPER-2011-019CERN-PH-EP-2011-227LHCB-PAPER-2011-019CERN-PH-EP-2011-227oai:cds.cern.ch:14222052012-02-03
spellingShingle	Particle Physics - Experiment Aaij, R. Abellan Beteta, C. Adeva, B. Adinolfi, M. Adrover, C. Affolder, A. Ajaltouni, Z. Albrecht, J. Alessio, F. Alexander, M. Alkhazov, G. Alvarez Cartelle, P. Alves Jr, A.A. Amato, S. Amhis, Y. Anderson, J. Appleby, R.B. Aquines Gutierrez, O. Archilli, F. Arrabito, L. Artamonov, A. Artuso, M. Aslanides, E. Auriemma, G. Bachmann, S. Back, J.J. Bailey, D.S. Balagura, V. Baldini, W. Barlow, R.J. Barschel, C. Barsuk, S. Barter, W. Bates, A. Bauer, C. Bauer, Th. Bay, A. Bediaga, I. Belogurov, S. Belous, K. Belyaev, I. Ben-Haim, E. Benayoun, M. Bencivenni, G. Benson, S. Benton, J. Bernet, R. Bettler, M.O. van Beuzekom, M. Bien, A. Bifani, S. Bird, T. Bizzeti, A. Bjornstad, P.M. Blake, T. Blanc, F. Blanks, C. Blouw, J. Blusk, S. Bobrov, A. Bocci, V. Bondar, A. Bondar, N. Bonivento, W. Borghi, S. Borgia, A. Bowcock, T.J.V. Bozzi, C. Brambach, T. van den Brand, J. Bressieux, J. Brett, D. Britsch, M. Britton, T. Brook, N.H. Brown, H. Buchler-Germann, A. Burducea, I. Bursche, A. Buytaert, J. Cadeddu, S. Callot, O. Calvi, M. Calvo Gomez, M. Camboni, A. Campana, P. Carbone, A. Carboni, G. Cardinale, R. Cardini, A. Carson, L. Carvalho Akiba, K. Casse, G. Cattaneo, M. Cauet, Ch. Charles, M. Charpentier, Ph. Chiapolini, N. Ciba, K. Cid Vidal, X. Ciezarek, G. Clarke, P.E.L. Clemencic, M. Cliff, H.V. Closier, J. Coca, C. Coco, V. Cogan, J. Collins, P. Comerma-Montells, A. Constantin, F. Conti, G. Contu, A. Cook, A. Coombes, M. Corti, G. Cowan, G.A. Currie, R. D'Almagne, B. D'Ambrosio, C. David, P. David, P.N.Y. De Bonis, I. De Capua, S. De Cian, M. De Lorenzi, F. de Miranda, J.M. De Paula, L. De Simone, P. Decamp, D. Deckenhoff, M. Degaudenzi, H. Deissenroth, M. Del Buono, L. Deplano, C. Derkach, D. Deschamps, O. Dettori, F. Dickens, J. Dijkstra, H. Diniz Batista, P. Bonal, F.Domingo Donleavy, S. Dordei, F. Dosil Suarez, A. Dossett, D. Dovbnya, A. Dupertuis, F. Dzhelyadin, R. Dziurda, A. Easo, S. Egede, U. Egorychev, V. Eidelman, S. van Eijk, D. Eisele, F. Eisenhardt, S. Ekelhof, R. Eklund, L. Elsasser, Ch. Elsby, D. Esperante Pereira, D. Esteve, L. Falabella, A. Fanchini, E. Farber, C. Fardell, G. Farinelli, C. Farry, S. Fave, V. Fernandez Albor, V. Ferro-Luzzi, M. Filippov, S. Fitzpatrick, C. Fontana, M. Fontanelli, F. Forty, R. Frank, M. Frei, C. Frosini, M. Furcas, S. Gallas Torreira, A. Galli, D. Gandelman, M. Gandini, P. Gao, Y. Garnier, J-C. Garofoli, J. Garra Tico, J. Garrido, L. Gascon, D. Gaspar, C. Gauvin, N. Gersabeck, M. Gershon, T. Ghez, Ph. Gibson, V. Gligorov, V.V. Gobel, C. Golubkov, D. Golutvin, A. Gomes, A. Gordon, H. Grabalosa Gandara, M. Graciani Diaz, R. Granado Cardoso, L.A. Grauges, E. Graziani, G. Grecu, A. Greening, E. Gregson, S. Gui, B. Gushchin, E. Guz, Yu. Gys, T. Haefeli, G. Haen, C. Haines, S.C. Hampson, T. Hansmann-Menzemer, S. Harji, R. Harnew, N. Harrison, J. Harrison, P.F. He, J. Heijne, V. Hennessy, K. Henrard, P. Hernando Morata, J.A. van Herwijnen, E. Hicks, E. Holubyev, K. Hopchev, P. Hulsbergen, W. Hunt, P. Huse, T. Huston, R.S. Hutchcroft, D. Hynds, D. Iakovenko, V. Ilten, P. Imong, J. Jacobsson, R. Jaeger, A. Jahjah Hussein, M. Jans, E. Jansen, F. Jaton, P. Jean-Marie, B. Jing, F. John, M. Johnson, D. Jones, C.R. Jost, B. Kaballo, M. Kandybei, S. Karacson, M. Karbach, T.M. Keaveney, J. Kenyon, I.R. Kerzel, U. Ketel, T. Keune, A. Khanji, B. Kim, Y.M. Knecht, M. Koppenburg, P. Kozlinskiy, A. Kravchuk, L. Kreplin, K. Kreps, M. Krocker, G. Krokovny, P. Kruse, F. Kruzelecki, K. Kucharczyk, M. Kvaratskheliya, T. La Thi, V.N. Lacarrere, D. Lafferty, G. Lai, A. Lambert, D. Lambert, R.W. Lanciotti, E. Lanfranchi, G. Langenbruch, C. Latham, T. Lazzeroni, C. Le Gac, R. van Leerdam, J. Lees, J.P. Lefevre, R. Leflat, A. Lefrancois, J. Leroy, O. Lesiak, T. Li, L. Li Gioi, L. Lieng, M. Liles, M. Lindner, R. Linn, C. Liu, B. Liu, G. Lopes, J.H. Lopez Asamar, E. Lopez-March, N. Lu, H. Luisier, J. Raighne, A.Mac Machefert, F. Machikhiliyan, I.V. Maciuc, F. Maev, O. Magnin, J. Malde, S. Mamunur, R.M.D. Manca, G. Mancinelli, G. Mangiafave, N. Marconi, U. Marki, R. Marks, J. Martellotti, G. Martens, A. Martin, L. Martin Sanchez, A. Martinez Santos, D. Massafferri, A. Mathe, Z. Matteuzzi, C. Matveev, M. Maurice, E. Maynard, B. Mazurov, A. McGregor, G. McNulty, R. Mclean, C. Meissner, M. Merk, M. Merkel, J. Messi, R. Miglioranzi, S. Milanes, D.A. Minard, M.N. Molina Rodriguez, J. Monteil, S. Moran, D. Morawski, P. Mountain, R. Mous, I. Muheim, F. Muller, K. Muresan, R. Muryn, B. Muster, B. Musy, M. Mylroie-Smith, J. Naik, P. Nakada, T. Nandakumar, R. Nasteva, I. Nedos, M. Needham, M. Neufeld, N. Nguyen-Mau, C. Nicol, M. Niess, V. Nikitin, N. Nomerotski, A. Novoselov, A. Oblakowska-Mucha, A. Obraztsov, V. Oggero, S. Ogilvy, S. Okhrimenko, O. Oldeman, R. Orlandea, M. Otalora Goicochea, J.M. Owen, P. Pal, K. Palacios, J. Palano, A. Palutan, M. Panman, J. Papanestis, A. Pappagallo, M. Parkes, C. Parkinson, C.J. Passaleva, G. Patel, G.D. Patel, M. Paterson, S.K. Patrick, G.N. Patrignani, C. Pavel-Nicorescu, C. Pazos Alvarez, A. Pellegrino, A. Penso, G. Pepe Altarelli, M. Perazzini, S. Perego, D.L. Perez Trigo, E. Perez-Calero Yzquierdo, A. Perret, P. Perrin-Terrin, M. Pessina, G. Petrella, A. Petrolini, A. Phan, A. Picatoste Olloqui, E. Pie Valls, B. Pietrzyk, B. Pilar, T. Pinci, D. Plackett, R. Playfer, S. Plo Casasus, M. Polok, G. Poluektov, A. Polycarpo, E. Popov, D. Popovici, B. Potterat, C. Powell, A. du Pree, T. Prisciandaro, J. Pugatch, V. Puig Navarro, A. Qian, W. Rademacker, J.H. Rakotomiaramanana, B. Rangel, M.S. Raniuk, I. Raven, G. Redford, S. Reid, M.M. dos Reis, A.C. Ricciardi, S. Rinnert, K. Roa Romero, D.A. Robbe, P. Rodrigues, E. Rodrigues, F. Rodriguez Perez, P. Rogers, G.J. Roiser, S. Romanovsky, V. Rosello, M. Rouvinet, J. Ruf, T. Ruiz, H. Sabatino, G. Saborido Silva, J.J. Sagidova, N. Sail, P. Saitta, B. Salzmann, C. Sannino, M. Santacesaria, R. Santamarina Rios, C. Santinelli, R. Santovetti, E. Sapunov, M. Sarti, A. Satriano, C. Satta, A. Savrie, M. Savrina, D. Schaack, P. Schiller, M. Schleich, S. Schlupp, M. Schmelling, M. Schmidt, B. Schneider, O. Schopper, A. Schune, M.H. Schwemmer, R. Sciascia, B. Sciubba, A. Seco, M. Semennikov, A. Senderowska, K. Sepp, I. Serra, N. Serrano, J. Seyfert, P. Shao, B. Shapkin, M. Shapoval, I. Shatalov, P. Shcheglov, Y. Shears, T. Shekhtman, L. Shevchenko, O. Shevchenko, V. Shires, A. Coutinho, R.Silva Skwarnicki, T. Smith, A.C. Smith, N.A. Smith, E. Sobczak, K. Soler, F.J.P. Solomin, A. Soomro, F. Souza De Paula, B. Spaan, B. Sparkes, A. Spradlin, P. Stagni, F. Stahl, S. Steinkamp, O. Stoica, S. Stone, S. Storaci, B. Straticiuc, M. Straumann, U. Subbiah, V.K. Swientek, S. Szczekowski, M. Szczypka, P. Szumlak, T. T'Jampens, S. Teodorescu, E. Teubert, F. Thomas, C. Thomas, E. van Tilburg, J. Tisserand, V. Tobin, M. Topp-Joergensen, S. Torr, N. Tournefier, E. Tran, M.T. Tsaregorodtsev, A. Tuning, N. Garcia, M.Ubeda Ukleja, A. Urquijo, P. Uwer, U. Vagnoni, V. Valenti, G. Vazquez Gomez, R. Vazquez Regueiro, P. Vecchi, S. Velthuis, J.J. Veltri, M. Viaud, B. Videau, I. Vilasis-Cardona, X. Visniakov, J. Vollhardt, A. Volyanskyy, D. Voong, D. Vorobyev, A. Voss, H. Wandernoth, S. Wang, J. Ward, D.R. Watson, N.K. Webber, A.D. Websdale, D. Whitehead, M. Wiedner, D. Wiggers, L. Wilkinson, G. Williams, M.P. Williams, M. Wilson, F.F. Wishahi, J. Witek, M. Witzeling, W. Wotton, S.A. Wyllie, K. Xie, Y. Xing, F. Xing, Z. Yang, Z. Young, R. Yushchenko, O. Zavertyaev, M. Zhang, F. Zhang, L. Zhang, W.C. Zhang, Y. Zhelezov, A. Zhong, L. Zverev, E. Zvyagin, A. Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV
title	Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV
title_full	Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV
title_fullStr	Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV
title_full_unstemmed	Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV
title_short	Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV
title_sort	measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ tev
topic	Particle Physics - Experiment
url	https://dx.doi.org/10.1016/j.physletb.2012.06.077 http://cds.cern.ch/record/1421558
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measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT sobczakk measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT solerfjp measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT solomina measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT soomrof measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT souzadepaulab measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT spaanb measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT sparkesa measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT spradlinp measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT stagnif measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT stahls measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT steinkampo measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT stoicas measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT stones measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT storacib measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT straticiucm measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT straumannu measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT subbiahvk measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT swienteks measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT szczekowskim measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT szczypkap measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT szumlakt measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT tjampenss measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT teodorescue measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT teubertf measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT thomasc measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT thomase measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vantilburgj measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT tisserandv measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT tobinm measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT toppjoergensens measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT torrn measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT tournefiere measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT tranmt measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT tsaregorodtseva measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT tuningn measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT garciamubeda measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT uklejaa measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT urquijop measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT uweru measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vagnoniv measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT valentig measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vazquezgomezr measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vazquezregueirop measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vecchis measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT velthuisjj measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT veltrim measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT viaudb measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT videaui measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vilasiscardonax measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT visniakovj measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vollhardta measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT volyanskyyd measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT voongd measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vorobyeva measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT vossh measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wandernoths measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wangj measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT warddr measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT watsonnk measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT webberad measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT websdaled measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT whiteheadm measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wiednerd measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wiggersl measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wilkinsong measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT williamsmp measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT williamsm measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wilsonff measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wishahij measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT witekm measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT witzelingw measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wottonsa measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT wylliek measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT xiey measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT xingf measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT xingz measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT yangz measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT youngr measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT yushchenkoo measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zavertyaevm measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zhangf measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zhangl measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zhangwc measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zhangy measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zhelezova measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zhongl measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zvereve measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev AT zvyagina measurementofthecrosssectionratiosigmachic2sigmachic1forpromptchicproductionatsqrts7tev

Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV

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