Study of the rare Bs0 and B0 decays into the π+π−μ+μ− final state

Autor: M. Grabalosa Gándara, A. Di Canto, L. Anderlini, Federico Redi, M. Tobin, T. Hampson, S. Belogurov, Krzysztof Swientek, Franco Bedeschi, B. Rachwal, Brian Meadows, Tara Shears, L. Carson, B. K. Pal, Anton Poluektov, N. Torr, Marco Dorigo, E. Furfaro, C. Bozzi, G. D. Patel, P. Naik, S. Reichert, Alessio Sarti, Giulio Gazzoni, M. Schmelling, Max Neuner, C. J. Parkinson, Roger Forty, E. Santovetti, M. Nicol, R. Calabrese, B. X. Liu, A. Romero Vidal, Gabriele Simi, C. Barschel, N. Tuning, I. R. Kenyon, M. Pappagallo, Mark Richard James Williams, Nicola Serra, Silvia Borghi, O. Maev, Tomasz Skwarnicki, Angelo Geraci, Sebastian Bachmann, Martino Borsato, Albert Bursche, V. Obraztsov, A. Mapelli, Stephan Eisenhardt, Wouter Hulsbergen, F. Maciuc, S. Roiser, N. Chiapolini, I. Sepp, G. Passaleva, R. Casanova Mohr, M. Vesterinen, S. Gianì, B. Sanmartin Sedes, M. Karacson, A. Cook, Marta Calvi, V. Romanovsky, Fergus Wilson, Clarissa Baesso, T. Nikodem, F. Stagni, Giulio Dujany, E. Thomas, U. Marconi, E. Gersabeck, D. Ferguson, Mikhail Zavertyaev, Barbara Sciascia, Giovanni Carboni, K. Kurek, Lorenzo Cassina, A. Semennikov, D. Brett, C. Nguyen-Mau, I. V. Machikhiliyan, K. Kreplin, Stefano Gallorini, V. Rives Molina, M. Liles, Jan Buytaert, M. Plo Casasus, Lorenzo Sestini, P. Henrard, B. Schmidt, Ivan Belyaev, S. Playfer, L. Kravchuk, A. Di Domenico, N. Rauschmayr, Alessandro Cardini, J. M. De Miranda, Jonas Rademacker, F. Blanc, S. Amerio, W. Wislicki, Yejin Zhang, R. Nandakumar, V. Niess, M. Korolev, G. Mancinelli, R. Lefèvre, I. Counts, A. Ukleja, A. Artamonov, S. Easo, Miroslaw Firlej, A. Novoselov, G. Graziani, N. Skidmore, N. Hussain, Violetta Cogoni, Mariana Rihl, E. Grauges, Themistocles Bowcock, Laura Gavardi, V. Salustino Guimaraes, Eugenia Price, P. N. Y. David, David Gascon, C. Voss, C. Khurewathanakul, C. Santamarina Rios, S. Gregson, Stephen M. Stahl, P. Vazquez Regueiro, R. Silva Coutinho, Dmitry Popov, N. Neufeld, R. F. Koopman, C. Haen, M. Shapkin, Gianluigi Casse, D. Dossett, Alessandro Bertolin, C. Hadjivasiliou, Vincenzo Battista, C. Langenbruch, W. C. Zhang, I. Raniuk, Pierluigi Campana, D. Websdale, B. Couturier, Marco Cattaneo, S. Filippov, Claudio Gotti, B. Langhans, F. Fontanelli, E. Tournefier, F. Machefert, C. Hombach, J. J. Walsh, I. Nasteva, A. Shires, S. Tourneur, I. Shapoval, Luciano Pappalardo, V. Vorobyev, A. Borgia, S. Lohn, J. M. Otalora Goicochea, Alexander Berezhnoy, E. Cogneras, W. Sutcliffe, B. Rakotomiaramanana, C. Goebel, Konstantinos Petridis, V. Fernandez Albor, Y. Shcheglov, A. Dzyuba, F. Soomro, N. A. Smith, E. van Herwijnen, J. D. Price, B. Storaci, A.E. Bondar, A. Oyanguren, J. Beddow, J. Albrecht, J. V. Viana Barbosa, R. Wallace, R. Ekelhof, M. Ferro-Luzzi, G. Manca, O. Schneider, Kurt Rinnert, S. A. Wotton, S. Farry, Rudolf Oldeman, M. J. Morello, A. Dovbnya, V. Vagnoni, L. Zhang, Massimiliano Fiorini, P. David, Matthew Kelsey, D. C. Craik, P. M. Bjørnstad, Timothy Gershon, Y. Xie, Thomas Blake, Antonio Pellegrino, A. Gallas Torreira, L. Pescatore, Daniel Patrick O'Hanlon, E. Jans, G. Wormser, Karol Hennessy, L. Beaucourt, A. Pistone, C. Parkes, A. Petrolini, V. N. La Thi, A. Tsaregorodtsev, Silvia Gambetta, B. Souza De Paula, E. Rodrigues, Marianna Fontana, L. De Paula, R. Andreassen, T. Kvaratskheliya, G. Valenti, Wojciech Kucewicz, Zishuo Yang, M. Palutan, M. Teklishyn, M. O. Bettler, V. V. Gligorov, Biplab Dey, H. Schindler, Marek Idzik, F. Kruse, P. Ruiz Valls, T. Head, X. Cid Vidal, T. M. Karbach, M. De Cian, M. van Beuzekom, Scott Ely, M. Charles, F. Meier, C. Lazzeroni, M. Meissner, R. Santacesaria, C. Vázquez Sierra, Sheldon Stone, L. Grillo, Federica Lionetto, Marco Adinolfi, D. Voong, V. Gibson, R. Le Gac, Davide Pinci, R. Cenci, Stephane T'Jampens, M. S. Rangel, V. Bocci, Liupan An, Zhijie Xu, A. Zhokhov, A. Badalov, Marian Stahl, S. T. Harnew, R. Maerki, A. Satta, P. Lowdon, Gianni Penso, S. Neubert, V. Shevchenko, N. Moggi, T. Ruf, Nathanael Farley, M. Witek, K. Wyllie, Y. Li, A. Palano, Tomasz Szumlak, J. A. de Vries, P. Owen, Robert Appleby, J. Blouw, J. Maratas, M. M. Reid, Anna Lupato, M. Britsch, B. Pietrzyk, Sophie Richards, J. P. Lees, M. Needham, R. Currie, P. Fol, Michael Kolpin, P. Durante, C. Thomas, G. Lanfranchi, M.-N. Minard, A. D. Nguyen, A. Vorobyev, G. Martellotti, S. Hansmann-Menzemer, C. Sanchez Mayordomo, H. V. Cliff, Federico Alessio, D. Lambert, F. Teubert, D. Hynds, Cameron Thomas Dean, J. Lefrançois, A. Contu, Marina Artuso, M. Corvo, A. Jaeger, M. Schlupp, F. F. Jing, Olivier Leroy, W. Kanso, E. S. Smith, F. Dordei, Dmitry Golubkov, D. Galli, Malcolm John, S. Coquereau, M. Gandelman, Jinlin Fu, U. Eitschberger, P. Morawski, M. Merk, S. Monteil, A. Schopper, W. Bonivento, Diego Alejandro Milanes, E. Greening, O. Steinkamp, M. Andreotti, M. Tresch, Maximilien Chefdeville, R. Mountain, Simone Bifani, Eleonora Luppi, E. Gushchin, C. Linn, Ch. Elsasser, E. Polycarpo, Tatsuya Nakada, D. R. Johnson, M. Pepe Altarelli, D. Wiedner, A. Pritchard, R. Schwemmer, C. J. G. Onderwater, P. Perret, Manuel Schiller, K. Carvalho Akiba, Matteo Rama, L. Zhong, G. Collazuol, Mauro Morandin, R. Vazquez Gomez, O. Aquines Gutierrez, Sergey Barsuk, C. Joram, Patrick Koppenburg, Giulia Tellarini, Marco Gersabeck, H. Ruiz, M. Hoballah, G. Ciezarek, T. Lesiak, I. O. Skillicorn, C. R. Jones, K. Müller, M. Orlandea, Srikanth Sridharan, Andrew Crocombe, Z. Mathe, O. Lupton, M. T. Tran, R. Gauld, U. Uwer, J. Panman, Luca Tomassetti, D. Souza, G. Bencivenni, B. McSkelly, S. Esen, A. Gianelle, Sandro Cadeddu, Nikolay Bondar, L. Garrido, Simon Akar, O. Okhrimenko, F. Muheim, J. Jalocha, J. Todd, M. Veltri, G. Haefeli, H. W. Wilschut, B. Leverington, M. Chrzaszcz, Ph. Ghez, A. Sciubba, V. Egorychev, Marcello Rotondo, R. Jacobsson, Roger Barlow, William Barter, P. Szczypka, Angelo Carbone, Louis Henry, L. Giubega, Jakub Moron, A. Leflat, L. Castillo Garcia, Daniel Martin Saunders, S. Perazzini, J. Molina Rodriguez, Elie Aslanides, J. Marks, M. Straticiuc, Tomasz Fiutowski, Jaap Velthuis, Lucian Cojocariu, P. Collins, F. J. P. Soler, G. A. Cowan, S. Ali, S. C. Haines, A. Hicheur, M. P. Williams, D. Vieira, S. Malde, S. Ogilvy, B. Gui, S. Kandybei, David Hutchcroft, C. Satriano, F. Palombo, D. Martinez Santos, D. Lacarrere, A. Mordà, J. R. Smith, P. Gandini, I. Polyakov, M. McCann, C. Matteuzzi, M. Coombes, E. Ben-Haim, Valery Pugatch, M. Frosini, O. Kochebina, P. Spradlin, R. Niet, A. Dziurda, J. Prisciandaro, A. McNab, Roland Bernet, E. Picatoste Olloqui, T. Pilar, S. Wandernoth, R. Graciani Diaz, Neville Harnew, A. Vollhardt, S. Topp-Joergensen, Adam Benjamin Morris, B. Popovici, N. Déléage, Michael Alexander, D. Lucchesi, K. De Bruyn, J. Harrison, F. Polci, Ignacio Bediaga, F. Dupertuis, Wander Baldini, P. Alvarez Cartelle, A. Zhelezov, M. Fiore, J. McCarthy, Sandra Amato, M. Kucharczyk, T. Gys, U. Gastaldi, S. Ricciardi, Timothy Evans, K. Belous, Jolanta Brodzicka, S. Cunliffe, A. Davis, J. Wimberley, M. Deckenhoff, Christoph Frei, Tatiana Likhomanenko, S. Klaver, Julien Cogan, M. Sirendi, S. Swientek, O. Yushchenko, J. J. Saborido Silva, Nicola Neri, P. Tsopelas, Thomas Latham, C. Patrignani, R. Matev, Claudia Vacca, V. Tisserand, G. Wilkinson, A. Otto, P. Rodriguez Perez, J. Rouvinet, Carmelo D'Ambrosio, Jean François Marchand, Oleg Stenyakin, R. McNulty, P. Krokovny, Francesco Dettori, C. Fitzpatrick, A. Bien, S. Karodia, A. A. Alves, D. Volyanskyy, L. Del Buono, Ch. Cauet, Sai-Juan Chen, B. Muster, A. Gomes, A. Falabella, Biagio Saitta, J. van Tilburg, L. A. Granado Cardoso, Philip Ilten, O. Gruenberg, C. Wallace, R. W. Lambert, I. Komarov, R. Dzhelyadin, A. Lai, N. H. Brook, A. Pearce, Roberta Cardinale, A. Vallier, D. Martins Tostes, J. E. Andrews, M. Zangoli, Lorenzo Capriotti, G. Auriemma, Konrad Klimaszewski, S. Stracka, A. Jawahery, J. H. Lopes, Markus Frank, Karlis Dreimanis, F. Sterpka, S. Blusk, C. Potterat, T. Britton, M. Cruz Torres, M. Mussini, S. Tolk, B. Khanji, S. Vecchi, Jeremy Dalseno, M. Ubeda Garcia, Yasmine Amhis, A. A. Affolder, P. Griffith, M. Smith, C. Faerber, X. Yuan, J. Garofoli, J. Anderson, George Lafferty, M. Hess, Andrea Bizzeti, R. Stroili, M. Baalouch, Z. Xing, Yu. Guz, P. De Simone, J. García Pardiñas, R. Lindner, B. Spaan, H. L. Snoek, J. Closier, A. Massafferri, B. Osorio Rodrigues, J. A. Hernando Morata, Y. N. Gao, Hans Dijkstra, A. Ustyuzhanin, Roel Aaij, C. Gaspar, Jing Wang, A. Mazurov, G. Veneziano, Mark Whitehead, T. Bird, C. Farinelli, C. Marin Benito, Michal Kreps, E. Bowen, B. Jost, A. Bay, S. Donleavy, Marco Clemencic, J. van Leerdam, G. Raven, D. Decamp, A. Golutvin, Varvara Batozskaya, G. Krocker, L. Shekhtman, A. Dosil Suárez, Victor Coco, Albert Comerma-Montells, Xiaoxue Han, G. Alkhazov, S.I. Eidelman, A. Puig Navarro, M. Calvo Gomez, D. Campora Perez, G. Corti, V. Kudryavtsev, D. R. Ward, J. Wishahi, D. Hill, Maurizio Martinelli, M. Szczekowski, M. Vieites Diaz, S. De Capua, W. De Silva, Oscar De Aguiar Francisco, Nikolay Nikitin, I. Longstaff, D. Savrina, W. Qian, F. Martinez Vidal, Tjeerd Ketel, Ana Trisovic, P. E. L. Clarke, A. C. dos Reis, A. Popov, I. El Rifai, Lars Eklund, V. Heijne, J. Garra Tico, Ziad Ajaltouni, Giovanni Punzi, C. Prouve, Xavier Vilasis-Cardona, S. Stevenson, P. Seyfert, A. Papanestis, M. Patel, Michael Sokoloff, N. K. Watson, T. D. Nguyen, S.-F. Cheung, J. He, Marie Helene Schune, B. Viaud, D. Tonelli, S. Wright, A. Grecu, N. Sagidova, RF Fay, U. Egede, H. Luo, L. Sun, J. J. Back, Bernardo Adeva, B. Hamilton, Sean Benson, Hal Evans, U. Straumann, Elena Graverini, Ph. Charpentier, Alexander Malinin, Olivier Deschamps, Flavio Archilli, P. Marino, S. Hall, Mark Wilkinson, Roland Waldi, A. B. Rodrigues, V. Syropoulos, J. Serrano, Patrick Robbe, S. Stoica, E. Pesen, J. Benton, Nathan Jurik, P. Sail, Denis Derkach, F. Ferreira Rodrigues, Agnieszka Oblakowska-Mucha
Rok vydání: 2015
Předmět:
Zdroj: Physics Letters B. 743:46-55
ISSN: 0370-2693
Popis: A search for the rare decays B0s→π+π−μ+μ− and B0→π+π−μ+μ− is performed in a data set corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. Decay candidates with pion pairs that have invariant mass in the range 0.5-1.3 GeV/c2 and with muon pairs that do not originate from a resonance are considered. The first observation of the decay B0s→π+π−μ+μ− and the first evidence of the decay B0→π+π−μ+μ− are obtained and the branching fractions are measured to be B(B0s→π+π−μ+μ−)=(8.6±1.5(stat)±0.7(syst)±0.7(norm))×10−8 and B(B0→π+π−μ+μ−)=(2.11±0.51(stat)±0.15(syst)±0.16(norm))×10−8, where the third uncertainty is due to the branching fraction of the decay B0→J/ψ(→μ+μ−)K∗(890)0(→K+π−), used as a normalisation.
Databáze: OpenAIRE