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Measurement of the $B^0_s \rightarrow J/\psi \bar{K}^{*0}$ branching fraction and angular amplitudes

A sample of 114±11 $B_s^0 → J/ψK^-π^+$ signal events obtained with 0.37  fb$^{-1}$ of pp collisions at √s=7  TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes of the $B_s^0 → J/ψK̅ ^{*0}$ decay, with $K̅ ^{*0} → K^-π^+$. The $K^-π^+$ mass spec...

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Detalles Bibliográficos
Autores principales: Aaij, R, Abellan Beteta, C, Adametz, A, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves Jr, A A, Amato, S, Amhis, Y, Anderson, J, Appleby, R B, Aquines Gutierrez, O, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Back, J J, Balagura, V, Baldini, W, Barlow, R J, Barschel, C, Barsuk, S, Barter, W, Bates, A, Bauer, C, Bauer, Th, Bay, A, Beddow, J, 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, Bjørnstad, 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, Büchler-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, Chen, P, Chiapolini, N, Chrzaszcz, M, Ciba, K, Cid Vidal, X, Ciezarek, G, Clarke, P E L, Clemencic, M, Cliff, H V, Closier, J, Coca, C, Coco, V, Cogan, J, Cogneras, E, Collins, P, Comerma-Montells, A, Contu, A, Cook, A, Coombes, M, Corti, G, Couturier, B, Cowan, G A, Craik, D, Currie, R, D'Ambrosio, C, David, P, David, P N Y, De Bonis, I, De Bruyn, K, De Capua, S, De Cian, M, De Miranda, J M, De Paula, L, De Simone, P, Decamp, D, Deckenhoff, M, Degaudenzi, H, Del Buono, L, Deplano, C, Derkach, D, Deschamps, O, Dettori, F, Dickens, J, Dijkstra, H, Diniz Batista, P, Domingo Bonal, F, Donleavy, S, Dordei, F, Dosil Suárez, A, Dossett, D, Dovbnya, A, Dupertuis, F, Dzhelyadin, R, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, van Eijk, D, Eisele, F, Eisenhardt, S, Ekelhof, R, Eklund, L, El Rifai, I, Elsasser, Ch, Elsby, D, Esperante Pereira, D, Falabella, A, Färber, C, Fardell, G, Farinelli, C, Farry, S, Fave, V, Fernandez Albor, V, Ferreira Rodrigues, F, Ferro-Luzzi, M, Filippov, S, Fitzpatrick, C, Fontana, M, Fontanelli, F, Forty, R, Francisco, O, 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, Gauld, R, Gauvin, N, Gersabeck, E, Gersabeck, M, Gershon, T, Ghez, Ph, Gibson, V, Gligorov, V V, Göbel, C, Golubkov, D, Golutvin, A, Gomes, A, Gordon, H, Grabalosa Gándara, M, Graciani Diaz, R, Granado Cardoso, L A, Graugés, E, Graziani, G, Grecu, A, Greening, E, Gregson, S, Grünberg, O, Gui, B, Gushchin, E, Guz, Yu, Gys, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, S C, Hampson, T, Hansmann-Menzemer, S, Harnew, N, Harnew, S T, Harrison, J, Harrison, P F, Hartmann, T, He, J, Heijne, V, Hennessy, K, Henrard, P, Hernando Morata, J A, van Herwijnen, E, Hicks, E, Hoballah, M, 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, Kochebina, O, Komarov, I, Koopman, R F, Koppenburg, P, Korolev, M, Kozlinskiy, A, Kravchuk, L, Kreplin, K, Kreps, M, Krocker, G, Krokovny, P, Kruse, F, Kucharczyk, M, Kudryavtsev, V, 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, Lefèvre, R, Leflat, A, Lefrançois, J, Leroy, O, Lesiak, T, Li, L, Li, Y, Li Gioi, L, Lieng, M, Liles, M, Lindner, R, Linn, C, Liu, B, Liu, G, von Loeben, J, Lopes, J H, Lopez Asamar, E, Lopez-March, N, Lu, H, Luisier, J, Mac Raighne, A, 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, Märki, R, Marks, J, Martellotti, G, Martens, A, Martin, L, Martín Sánchez, A, Martinelli, M, Martinez Santos, D, Massafferri, A, Mathe, Z, Matteuzzi, C, Matveev, M, Maurice, E, Mazurov, A, McCarthy, J, McGregor, G, McNulty, R, Meissner, M, Merk, M, Merkel, J, Milanes, D A, Minard, M -N, Molina Rodriguez, J, Monteil, S, Moran, D, Morawski, P, Mountain, R, Mous, I, Muheim, F, Müller, K, Muresan, R, Muryn, B, Muster, B, Mylroie-Smith, J, Naik, P, Nakada, T, Nandakumar, R, Nasteva, I, Needham, M, Neufeld, N, Nguyen, A D, Nguyen-Mau, C, Nicol, M, Niess, V, Nikitin, N, Nikodem, T, 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, B K, Palano, A, Palutan, M, Panman, J, Papanestis, A, Pappagallo, M, Parkes, C, Parkinson, C J, Passaleva, G, Patel, G D, Patel, M, 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, Pérez-Calero Yzquierdo, A, Perret, P, Perrin-Terrin, M, Pessina, G, Petrolini, A, Phan, A, Picatoste Olloqui, E, Pie Valls, B, Pietrzyk, B, Pilař, T, Pinci, D, Playfer, S, Plo Casasus, M, Polci, F, Polok, G, Poluektov, A, Polycarpo, E, Popov, D, Popovici, B, Potterat, C, Powell, A, Prisciandaro, J, Pugatch, V, Puig Navarro, A, Qian, W, Rademacker, J H, Rakotomiaramanana, B, Rangel, M S, Raniuk, I, Rauschmayr, N, Raven, G, Redford, S, Reid, M M, dos Reis, A C, Ricciardi, S, Richards, A, Rinnert, K, Roa Romero, D A, Robbe, P, Rodrigues, E, Rodrigues, F, Rodriguez Perez, P, Rogers, G J, Roiser, S, Romanovsky, V, Romero Vidal, A, Rosello, M, Rouvinet, J, Ruf, T, Ruiz, H, Sabatino, G, Saborido Silva, J J, Sagidova, N, Sail, P, Saitta, B, Salzmann, C, Sanmartin Sedes, B, 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, Schindler, H, 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, Shapkin, M, Shapoval, I, Shatalov, P, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, O, Shevchenko, V, Shires, A, Silva Coutinho, R, Skwarnicki, T, Smith, N A, Smith, E, Smith, M, Sobczak, K, Soler, F J P, Solomin, A, Soomro, F, Souza, D, 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, Teklishyn, M, Teodorescu, E, Teubert, F, Thomas, C, Thomas, E, van Tilburg, J, Tisserand, V, Tobin, M, Tolk, S, Topp-Joergensen, S, Torr, N, Tournefier, E, Tourneur, S, Tran, M T, Tsaregorodtsev, A, Tuning, N, Ubeda Garcia, M, Ukleja, A, Uwer, U, Vagnoni, V, Valenti, G, Vazquez Gomez, R, Vazquez Regueiro, P, Vecchi, S, Velthuis, J J, Veltri, M, Veneziano, G, Vesterinen, M, Viaud, B, Videau, I, Vieira, D, Vilasis-Cardona, X, Visniakov, J, Vollhardt, A, Volyanskyy, D, Voong, D, Vorobyev, A, Vorobyev, V, Voß, C, Voss, H, Waldi, R, Wallace, R, Wandernoth, S, Wang, J, Ward, D R, Watson, N K, Webber, A D, Websdale, D, Whitehead, M, Wicht, J, Wiedner, D, Wiggers, L, Wilkinson, G, Williams, M P, Williams, M, Wilson, F F, Wishahi, J, Witek, M, Witzeling, W, Wotton, S A, Wright, S, Wu, S, Wyllie, K, Xie, Y, Xing, F, Xing, Z, Yang, Z, Young, R, Yuan, X, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, F, Zhang, L, Zhang, W C, Zhang, Y, Zhelezov, A, Zhong, L, Zvyagin, A
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.86.071102
http://cds.cern.ch/record/1471720
Descripción
Sumario:A sample of 114±11 $B_s^0 → J/ψK^-π^+$ signal events obtained with 0.37  fb$^{-1}$ of pp collisions at √s=7  TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes of the $B_s^0 → J/ψK̅ ^{*0}$ decay, with $K̅ ^{*0} → K^-π^+$. The $K^-π^+$ mass spectrum of the candidates in the $B_s^0$ peak is dominated by the $K̅ ^{*0}$ contribution. Subtracting the nonresonant $K^-π^+$ component, the branching fraction of $B_s^0 → J/ψK̅ ^{*0}$ is $(4.4_{-0.4}^{+0.5}±0.8)×10^{-5}$, where the first uncertainty is statistical and the second is systematic. A fit to the angular distribution of the decay products yields the $K^{*0}$ polarization fractions $f_L=0.50±0.08±0.02$ and $f_{∥}=0.19_{-0.08}^{+0.10}±0.02$.