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Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 TeV
The $\bar{\Lambda} / \Lambda$ and $\bar{\Lambda} / K^0_\mathrm{S}$ production ratios are measured by the LHCb detector from $0.3\,\mathrm{nb}^{-1}$ of $pp$ collisions delivered by the LHC at $\sqrt{s} = 0.9$\,TeV and $1.8\,\mathrm{nb}^{-1}$ at $\sqrt{s} = 7$\,TeV. Both ratios are presented as a func...
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Lenguaje: | eng |
Publicado: |
2011
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/JHEP08(2011)034 http://cds.cern.ch/record/1365724 |
_version_ | 1780922747960950784 |
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author | Aaij, R. 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. 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. Belous, K. Belyaev, I. Ben-Haim, E. Benayoun, M. Bencivenni, G. Benson, S. Bernet, R. Bettler, M.O. van Beuzekom, M. Bien, A. Bifani, S. 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. Brisbane, S. Britsch, M. Britton, T. Brook, N.H. Buchler-Germann, A. Burducea, I. Bursche, A. Buytaert, J. Cadeddu, S. Caicedo Carvajal, J.M. 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. Charles, M. Charpentier, Ph. Chiapolini, N. Cid Vidal, X. Ciezarek, G. Clarke, P.E.L. Clemencic, M. Cliff, H.V. Closier, J. Coca, C. Coco, V. Cogan, J. Collins, P. Constantin, F. Conti, G. Contu, A. Coombes, M. Corti, G. Cowan, G.A. Currie, R. D'Almagne, B. D'Ambrosio, C. David, P. 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. Deschamps, O. Dettori, F. Dickens, J. Dijkstra, H. Diniz Batista, P. Dossett, D. Dovbnya, A. Dupertuis, F. Dzhelyadin, R. Eames, C. Easo, S. Egede, U. Egorychev, V. Eidelman, S. van Eijk, D. Eisele, F. Eisenhardt, S. Ekelhof, R. Eklund, L. Elsasser, Ch. d'Enterria, D.G. 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. 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. 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. Hofmann, W. 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. Kandybei, S. Karacson, M. Karbach, T.M. Keaveney, J. Kerzel, U. Ketel, T. Keune, A. Khanji, B. Kim, Y.M. Knecht, M. Koblitz, S. Koppenburg, P. Kozlinskiy, A. Kravchuk, L. Kreplin, K. Kreps, M. Krocker, G. Krokovny, P. Kruse, F. Kruzelecki, K. Kucharczyk, M. Kukulak, S. Kumar, R. 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. Le Gac, R. van Leerdam, J. Lees, J.P. Lefevre, R. Leflat, A. Lefrancois, J. Leroy, O. Lesiak, T. Li, L. Li, Y.Y. Li Gioi, L. Lieng, M. Lindner, R. Linn, C. Liu, B. Liu, G. Lopes, J.H. Lopez Asamar, E. Lopez-March, N. Luisier, J. 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. Monteil, S. Moran, D. Morawski, P. Morris, J.V. Mountain, R. Mous, I. Muheim, F. Muller, K. Muresan, R. Muryn, B. Musy, M. Naik, P. Nakada, T. Nandakumar, R. Nardulli, J. Nasteva, I. Nedos, M. Needham, M. Neufeld, N. Nguyen-Mau, C. Nicol, M. Nies, S. Niess, V. Nikitin, N. Oblakowska-Mucha, A. Obraztsov, V. Oggero, S. Ogilvy, S. Okhrimenko, O. Oldeman, R. Orlandea, M. Otalora Goicochea, J.M. Owen, P. Pal, B. Palacios, J. 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. 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. Pree, T.du Prisciandaro, J. Pugatch, V. Puig Navarro, A. Qian, W. Rademacker, J.H. Rakotomiaramanana, B. Raniuk, I. Raven, G. Redford, S. Reid, M.M. Reis, A.C.dos Ricciardi, S. Rinnert, K. Roa Romero, D.A. Robbe, P. Rodrigues, E. Rodrigues, F. Rodriguez Perez, P. Rogers, G.J. Romanovsky, V. Rouvinet, J. Ruf, T. Ruiz, H. Sabatino, G. Saborido Silva, J.J. Sagidova, N. Sail, P. Saitta, B. Salzmann, C. Sannino, M. Santacesaria, R. Santinelli, R. Santovetti, E. Sapunov, M. Sarti, A. Satriano, C. Satta, A. Savrie, M. Savrina, D. Schaack, P. Schiller, M. Schleich, S. Schmelling, M. Schmidt, B. Schneider, O. Schopper, A. Schune, M.H. Schwemmer, R. 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. Silva Coutinho, R. Skottowe, H.P. Skwarnicki, T. Smith, A.C. Smith, N.A. 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. Styles, N. 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. Tran, M.T. Tsaregorodtsev, A. Tuning, N. Ukleja, A. Urquijo, P. Uwer, U. Vagnoni, V. Valenti, G. Vazquez Gomez, R. Vazquez Regueiro, P. Vecchi, S. Velthuis, J.J. Veltri, M. Vervink, K. Viaud, B. Videau, I. Vilasis-Cardona, X. Visniakov, J. Vollhardt, A. Voong, D. Vorobyev, A. Voss, H. Wacker, K. Wandernoth, S. Wang, J. Ward, D.R. 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. Yang, Z. Young, R. Yushchenko, O. Zavertyaev, M. Zhang, L. Zhang, W.C. Zhang, Y. Zhelezov, A. Zhong, L. Zverev, E. |
author_facet | Aaij, R. 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. 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. Belous, K. Belyaev, I. Ben-Haim, E. Benayoun, M. Bencivenni, G. Benson, S. Bernet, R. Bettler, M.O. van Beuzekom, M. Bien, A. Bifani, S. 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. Brisbane, S. Britsch, M. Britton, T. Brook, N.H. Buchler-Germann, A. Burducea, I. Bursche, A. Buytaert, J. Cadeddu, S. Caicedo Carvajal, J.M. 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. Charles, M. Charpentier, Ph. Chiapolini, N. Cid Vidal, X. Ciezarek, G. Clarke, P.E.L. Clemencic, M. Cliff, H.V. Closier, J. Coca, C. Coco, V. Cogan, J. Collins, P. Constantin, F. Conti, G. Contu, A. Coombes, M. Corti, G. Cowan, G.A. Currie, R. D'Almagne, B. D'Ambrosio, C. David, P. 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. Deschamps, O. Dettori, F. Dickens, J. Dijkstra, H. Diniz Batista, P. Dossett, D. Dovbnya, A. Dupertuis, F. Dzhelyadin, R. Eames, C. Easo, S. Egede, U. Egorychev, V. Eidelman, S. van Eijk, D. Eisele, F. Eisenhardt, S. Ekelhof, R. Eklund, L. Elsasser, Ch. d'Enterria, D.G. 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. 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. 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. Hofmann, W. 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. Kandybei, S. Karacson, M. Karbach, T.M. Keaveney, J. Kerzel, U. Ketel, T. Keune, A. Khanji, B. Kim, Y.M. Knecht, M. Koblitz, S. Koppenburg, P. Kozlinskiy, A. Kravchuk, L. Kreplin, K. Kreps, M. Krocker, G. Krokovny, P. Kruse, F. Kruzelecki, K. Kucharczyk, M. Kukulak, S. Kumar, R. 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. Le Gac, R. van Leerdam, J. Lees, J.P. Lefevre, R. Leflat, A. Lefrancois, J. Leroy, O. Lesiak, T. Li, L. Li, Y.Y. Li Gioi, L. Lieng, M. Lindner, R. Linn, C. Liu, B. Liu, G. Lopes, J.H. Lopez Asamar, E. Lopez-March, N. Luisier, J. 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. Monteil, S. Moran, D. Morawski, P. Morris, J.V. Mountain, R. Mous, I. Muheim, F. Muller, K. Muresan, R. Muryn, B. Musy, M. Naik, P. Nakada, T. Nandakumar, R. Nardulli, J. Nasteva, I. Nedos, M. Needham, M. Neufeld, N. Nguyen-Mau, C. Nicol, M. Nies, S. Niess, V. Nikitin, N. Oblakowska-Mucha, A. Obraztsov, V. Oggero, S. Ogilvy, S. Okhrimenko, O. Oldeman, R. Orlandea, M. Otalora Goicochea, J.M. Owen, P. Pal, B. Palacios, J. 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. 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. Pree, T.du Prisciandaro, J. Pugatch, V. Puig Navarro, A. Qian, W. Rademacker, J.H. Rakotomiaramanana, B. Raniuk, I. Raven, G. Redford, S. Reid, M.M. Reis, A.C.dos Ricciardi, S. Rinnert, K. Roa Romero, D.A. Robbe, P. Rodrigues, E. Rodrigues, F. Rodriguez Perez, P. Rogers, G.J. Romanovsky, V. Rouvinet, J. Ruf, T. Ruiz, H. Sabatino, G. Saborido Silva, J.J. Sagidova, N. Sail, P. Saitta, B. Salzmann, C. Sannino, M. Santacesaria, R. Santinelli, R. Santovetti, E. Sapunov, M. Sarti, A. Satriano, C. Satta, A. Savrie, M. Savrina, D. Schaack, P. Schiller, M. Schleich, S. Schmelling, M. Schmidt, B. Schneider, O. Schopper, A. Schune, M.H. Schwemmer, R. 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. Silva Coutinho, R. Skottowe, H.P. Skwarnicki, T. Smith, A.C. Smith, N.A. 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. Styles, N. 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. Tran, M.T. Tsaregorodtsev, A. Tuning, N. Ukleja, A. Urquijo, P. Uwer, U. Vagnoni, V. Valenti, G. Vazquez Gomez, R. Vazquez Regueiro, P. Vecchi, S. Velthuis, J.J. Veltri, M. Vervink, K. Viaud, B. Videau, I. Vilasis-Cardona, X. Visniakov, J. Vollhardt, A. Voong, D. Vorobyev, A. Voss, H. Wacker, K. Wandernoth, S. Wang, J. Ward, D.R. 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. Yang, Z. Young, R. Yushchenko, O. Zavertyaev, M. Zhang, L. Zhang, W.C. Zhang, Y. Zhelezov, A. Zhong, L. Zverev, E. |
author_sort | Aaij, R. |
collection | CERN |
description | The $\bar{\Lambda} / \Lambda$ and $\bar{\Lambda} / K^0_\mathrm{S}$ production ratios are measured by the LHCb detector from $0.3\,\mathrm{nb}^{-1}$ of $pp$ collisions delivered by the LHC at $\sqrt{s} = 0.9$\,TeV and $1.8\,\mathrm{nb}^{-1}$ at $\sqrt{s} = 7$\,TeV. Both ratios are presented as a function of transverse momentum, $p_\mathrm{T}$, and rapidity, $y$, in the ranges {$0.15 < p_\mathrm{T} < 2.50\,\mathrm{GeV}/c$} and {$2.0<y<4.5$}. Results at the two energies are in good agreement as a function of rapidity loss, $\Delta y = y_\mathrm{beam} - y$, and are consistent with previous measurements. The ratio $\bar{\Lambda} / \Lambda$, measuring the transport of baryon number from the collision into the detector, is smaller in data than predicted in simulation, particularly at high rapidity. The ratio $\bar{\Lambda} / K^0_\mathrm{S}$, measuring the baryon-to-meson suppression in strange quark hadronisation, is significantly larger than expected. |
id | cern-1365203 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2011 |
record_format | invenio |
spelling | cern-13652032023-02-14T03:38:11Zdoi:10.1007/JHEP08(2011)034http://cds.cern.ch/record/1365724engAaij, R.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.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.Belous, K.Belyaev, I.Ben-Haim, E.Benayoun, M.Bencivenni, G.Benson, S.Bernet, R.Bettler, M.O.van Beuzekom, M.Bien, A.Bifani, S.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.Brisbane, S.Britsch, M.Britton, T.Brook, N.H.Buchler-Germann, A.Burducea, I.Bursche, A.Buytaert, J.Cadeddu, S.Caicedo Carvajal, J.M.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.Charles, M.Charpentier, Ph.Chiapolini, N.Cid Vidal, X.Ciezarek, G.Clarke, P.E.L.Clemencic, M.Cliff, H.V.Closier, J.Coca, C.Coco, V.Cogan, J.Collins, P.Constantin, F.Conti, G.Contu, A.Coombes, M.Corti, G.Cowan, G.A.Currie, R.D'Almagne, B.D'Ambrosio, C.David, P.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.Deschamps, O.Dettori, F.Dickens, J.Dijkstra, H.Diniz Batista, P.Dossett, D.Dovbnya, A.Dupertuis, F.Dzhelyadin, R.Eames, C.Easo, S.Egede, U.Egorychev, V.Eidelman, S.van Eijk, D.Eisele, F.Eisenhardt, S.Ekelhof, R.Eklund, L.Elsasser, Ch.d'Enterria, D.G.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.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.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.Hofmann, W.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.Kandybei, S.Karacson, M.Karbach, T.M.Keaveney, J.Kerzel, U.Ketel, T.Keune, A.Khanji, B.Kim, Y.M.Knecht, M.Koblitz, S.Koppenburg, P.Kozlinskiy, A.Kravchuk, L.Kreplin, K.Kreps, M.Krocker, G.Krokovny, P.Kruse, F.Kruzelecki, K.Kucharczyk, M.Kukulak, S.Kumar, R.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.Le Gac, R.van Leerdam, J.Lees, J.P.Lefevre, R.Leflat, A.Lefrancois, J.Leroy, O.Lesiak, T.Li, L.Li, Y.Y.Li Gioi, L.Lieng, M.Lindner, R.Linn, C.Liu, B.Liu, G.Lopes, J.H.Lopez Asamar, E.Lopez-March, N.Luisier, J.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.Monteil, S.Moran, D.Morawski, P.Morris, J.V.Mountain, R.Mous, I.Muheim, F.Muller, K.Muresan, R.Muryn, B.Musy, M.Naik, P.Nakada, T.Nandakumar, R.Nardulli, J.Nasteva, I.Nedos, M.Needham, M.Neufeld, N.Nguyen-Mau, C.Nicol, M.Nies, S.Niess, V.Nikitin, N.Oblakowska-Mucha, A.Obraztsov, V.Oggero, S.Ogilvy, S.Okhrimenko, O.Oldeman, R.Orlandea, M.Otalora Goicochea, J.M.Owen, P.Pal, B.Palacios, J.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.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.Pree, T.duPrisciandaro, J.Pugatch, V.Puig Navarro, A.Qian, W.Rademacker, J.H.Rakotomiaramanana, B.Raniuk, I.Raven, G.Redford, S.Reid, M.M.Reis, A.C.dosRicciardi, S.Rinnert, K.Roa Romero, D.A.Robbe, P.Rodrigues, E.Rodrigues, F.Rodriguez Perez, P.Rogers, G.J.Romanovsky, V.Rouvinet, J.Ruf, T.Ruiz, H.Sabatino, G.Saborido Silva, J.J.Sagidova, N.Sail, P.Saitta, B.Salzmann, C.Sannino, M.Santacesaria, R.Santinelli, R.Santovetti, E.Sapunov, M.Sarti, A.Satriano, C.Satta, A.Savrie, M.Savrina, D.Schaack, P.Schiller, M.Schleich, S.Schmelling, M.Schmidt, B.Schneider, O.Schopper, A.Schune, M.H.Schwemmer, R.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.Silva Coutinho, R.Skottowe, H.P.Skwarnicki, T.Smith, A.C.Smith, N.A.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.Styles, N.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.Tran, M.T.Tsaregorodtsev, A.Tuning, N.Ukleja, A.Urquijo, P.Uwer, U.Vagnoni, V.Valenti, G.Vazquez Gomez, R.Vazquez Regueiro, P.Vecchi, S.Velthuis, J.J.Veltri, M.Vervink, K.Viaud, B.Videau, I.Vilasis-Cardona, X.Visniakov, J.Vollhardt, A.Voong, D.Vorobyev, A.Voss, H.Wacker, K.Wandernoth, S.Wang, J.Ward, D.R.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.Yang, Z.Young, R.Yushchenko, O.Zavertyaev, M.Zhang, L.Zhang, W.C.Zhang, Y.Zhelezov, A.Zhong, L.Zverev, E.Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 TeVParticle Physics - ExperimentThe $\bar{\Lambda} / \Lambda$ and $\bar{\Lambda} / K^0_\mathrm{S}$ production ratios are measured by the LHCb detector from $0.3\,\mathrm{nb}^{-1}$ of $pp$ collisions delivered by the LHC at $\sqrt{s} = 0.9$\,TeV and $1.8\,\mathrm{nb}^{-1}$ at $\sqrt{s} = 7$\,TeV. Both ratios are presented as a function of transverse momentum, $p_\mathrm{T}$, and rapidity, $y$, in the ranges {$0.15 < p_\mathrm{T} < 2.50\,\mathrm{GeV}/c$} and {$2.0<y<4.5$}. Results at the two energies are in good agreement as a function of rapidity loss, $\Delta y = y_\mathrm{beam} - y$, and are consistent with previous measurements. The ratio $\bar{\Lambda} / \Lambda$, measuring the transport of baryon number from the collision into the detector, is smaller in data than predicted in simulation, particularly at high rapidity. The ratio $\bar{\Lambda} / K^0_\mathrm{S}$, measuring the baryon-to-meson suppression in strange quark hadronisation, is significantly larger than expected.The $\bar{\Lambda} / \Lambda$ and $\bar{\Lambda} / K^0_\mathrm{S}$ production ratios are measured by the LHCb detector from $0.3\,\mathrm{nb}^{-1}$ of $pp$ collisions delivered by the LHC at $\sqrt{s} = 0.9$\,TeV and $1.8\,\mathrm{nb}^{-1}$ at $\sqrt{s} = 7$\,TeV. Both ratios are presented as a function of transverse momentum, $p_\mathrm{T}$, and rapidity, $y$, in the ranges {$0.15 < p_\mathrm{T} < 2.50\,\mathrm{GeV}/c$} and {$2.0<y<4.5$}. Results at the two energies are in good agreement as a function of rapidity loss, $\Delta y = y_\mathrm{beam} - y$, and are consistent with previous measurements. The ratio $\bar{\Lambda} / \Lambda$, measuring the transport of baryon number from the collision into the detector, is smaller in data than predicted in simulation, particularly at high rapidity. The ratio $\bar{\Lambda} / K^0_\mathrm{S}$, measuring the baryon-to-meson suppression in strange quark hadronisation, is significantly larger than expected.arXiv:1107.0882CERN-PH-EP-2011-082LHCB-PAPER-2011-005CERN-PH-EP-2011-082LHCB-PAPER-2011-005oai:cds.cern.ch:13652032011-07-07 |
spellingShingle | Particle Physics - Experiment Aaij, R. 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. 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. Belous, K. Belyaev, I. Ben-Haim, E. Benayoun, M. Bencivenni, G. Benson, S. Bernet, R. Bettler, M.O. van Beuzekom, M. Bien, A. Bifani, S. 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. Brisbane, S. Britsch, M. Britton, T. Brook, N.H. Buchler-Germann, A. Burducea, I. Bursche, A. Buytaert, J. Cadeddu, S. Caicedo Carvajal, J.M. 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. Charles, M. Charpentier, Ph. Chiapolini, N. Cid Vidal, X. Ciezarek, G. Clarke, P.E.L. Clemencic, M. Cliff, H.V. Closier, J. Coca, C. Coco, V. Cogan, J. Collins, P. Constantin, F. Conti, G. Contu, A. Coombes, M. Corti, G. Cowan, G.A. Currie, R. D'Almagne, B. D'Ambrosio, C. David, P. 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. Deschamps, O. Dettori, F. Dickens, J. Dijkstra, H. Diniz Batista, P. Dossett, D. Dovbnya, A. Dupertuis, F. Dzhelyadin, R. Eames, C. Easo, S. Egede, U. Egorychev, V. Eidelman, S. van Eijk, D. Eisele, F. Eisenhardt, S. Ekelhof, R. Eklund, L. Elsasser, Ch. d'Enterria, D.G. 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. 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. 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. Hofmann, W. 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. Kandybei, S. Karacson, M. Karbach, T.M. Keaveney, J. Kerzel, U. Ketel, T. Keune, A. Khanji, B. Kim, Y.M. Knecht, M. Koblitz, S. Koppenburg, P. Kozlinskiy, A. Kravchuk, L. Kreplin, K. Kreps, M. Krocker, G. Krokovny, P. Kruse, F. Kruzelecki, K. Kucharczyk, M. Kukulak, S. Kumar, R. 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. Le Gac, R. van Leerdam, J. Lees, J.P. Lefevre, R. Leflat, A. Lefrancois, J. Leroy, O. Lesiak, T. Li, L. Li, Y.Y. Li Gioi, L. Lieng, M. Lindner, R. Linn, C. Liu, B. Liu, G. Lopes, J.H. Lopez Asamar, E. Lopez-March, N. Luisier, J. 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. Monteil, S. Moran, D. Morawski, P. Morris, J.V. Mountain, R. Mous, I. Muheim, F. Muller, K. Muresan, R. Muryn, B. Musy, M. Naik, P. Nakada, T. Nandakumar, R. Nardulli, J. Nasteva, I. Nedos, M. Needham, M. Neufeld, N. Nguyen-Mau, C. Nicol, M. Nies, S. Niess, V. Nikitin, N. Oblakowska-Mucha, A. Obraztsov, V. Oggero, S. Ogilvy, S. Okhrimenko, O. Oldeman, R. Orlandea, M. Otalora Goicochea, J.M. Owen, P. Pal, B. Palacios, J. 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. 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. Pree, T.du Prisciandaro, J. Pugatch, V. Puig Navarro, A. Qian, W. Rademacker, J.H. Rakotomiaramanana, B. Raniuk, I. Raven, G. Redford, S. Reid, M.M. Reis, A.C.dos Ricciardi, S. Rinnert, K. Roa Romero, D.A. Robbe, P. Rodrigues, E. Rodrigues, F. Rodriguez Perez, P. Rogers, G.J. Romanovsky, V. Rouvinet, J. Ruf, T. Ruiz, H. Sabatino, G. Saborido Silva, J.J. Sagidova, N. Sail, P. Saitta, B. Salzmann, C. Sannino, M. Santacesaria, R. Santinelli, R. Santovetti, E. Sapunov, M. Sarti, A. Satriano, C. Satta, A. Savrie, M. Savrina, D. Schaack, P. Schiller, M. Schleich, S. Schmelling, M. Schmidt, B. Schneider, O. Schopper, A. Schune, M.H. Schwemmer, R. 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. Silva Coutinho, R. Skottowe, H.P. Skwarnicki, T. Smith, A.C. Smith, N.A. 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. Styles, N. 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. Tran, M.T. Tsaregorodtsev, A. Tuning, N. Ukleja, A. Urquijo, P. Uwer, U. Vagnoni, V. Valenti, G. Vazquez Gomez, R. Vazquez Regueiro, P. Vecchi, S. Velthuis, J.J. Veltri, M. Vervink, K. Viaud, B. Videau, I. Vilasis-Cardona, X. Visniakov, J. Vollhardt, A. Voong, D. Vorobyev, A. Voss, H. Wacker, K. Wandernoth, S. Wang, J. Ward, D.R. 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. Yang, Z. Young, R. Yushchenko, O. Zavertyaev, M. Zhang, L. Zhang, W.C. Zhang, Y. Zhelezov, A. Zhong, L. Zverev, E. Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 TeV |
title | Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 TeV |
title_full | Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 TeV |
title_fullStr | Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 TeV |
title_full_unstemmed | Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 TeV |
title_short | Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 TeV |
title_sort | measurement of $v^0$ production ratios in $pp$ collisions at $\sqrt{s}$ = 0.9 and 7 tev |
topic | Particle Physics - Experiment |
url | https://dx.doi.org/10.1007/JHEP08(2011)034 http://cds.cern.ch/record/1365724 |
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