Measurement of the Branching Fraction and Search for Direct Violation from a Sum of Exclusive Final States
J. P. Lees1, V. Poireau1, V. Tisserand1, E. Grauges2, A. Palano3a,3b, G. Eigen4, B. Stugu4, D. N. Brown5, L. T. Kerth5 et al. (BaBar Collaboration)
L. T. Kerth5, Yu. G. Kolomensky5, M. J. Lee5, G. Lynch5, H. Koch6, T. Schroeder6, C. Hearty7, T. S. Mattison7, J. A. McKenna7, R. Y. So7, A. Khan8, V. E. Blinov9a,9c, A. R. Buzykaev9a, V. P. Druzhinin9a,9b, V. B. Golubev9a,9b, E. A. Kravchenko9a,9b, A. P. Onuchin9a,9c, S. I. Serednyakov9a,9b, Yu. I. Skovpen9a,9b, E. P. Solodov9a,9b, K. Yu. Todyshev9a,9b, A. N. Yushkov9a, A. J. Lankford10, M. Mandelkern10, B. Dey11, J. W. Gary11, O. Long11, C. Campagnari12, M. Franco Sevilla12, T. M. Hong12, D. Kovalskyi12, J. D. Richman12, C. A. West12, A. M. Eisner13, W. S. Lockman13, B. A. Schumm13, A. Seiden13, D. S. Chao14, C. H. Cheng14, B. Echenard14, K. T. Flood14, D. G. Hitlin14, T. S. Miyashita14, P. Ongmongkolkul14, F. C. Porter14, R. Andreassen15, Z. Huard15, B. T. Meadows15, B. G. Pushpawela15, M. D. Sokoloff15, L. Sun15, P. C. Bloom16, W. T. Ford16, A. Gaz16, U. Nauenberg16, J. G. Smith16, S. R. Wagner16, R. Ayad17,†, W. H. Toki17, B. Spaan18, R. Schwierz19, D. Bernard20, M. Verderi20, S. Playfer21, D. Bettoni22a, C. Bozzi22a, R. Calabrese22a,22b, G. Cibinetto22a,22b, E. Fioravanti22a,22b, I. Garzia22a,22b, E. Luppi22a,22b, L. Piemontese22a, V. Santoro22a, A. Calcaterra23, R. de Sangro23, G. Finocchiaro23, S. Martellotti23, P. Patteri23, I. M. Peruzzi23,‡, M. Piccolo23, M. Rama23, A. Zallo23, R. Contri24a,24b, E. Guido24a,24b, M. Lo Vetere24a,24b, M. R. Monge24a,24b, S. Passaggio24a, C. Patrignani24a,24b, E. Robutti24a, B. Bhuyan25, V. Prasad25, M. Morii26, A. Adametz27, U. Uwer27, H. M. Lacker28, P. D. Dauncey29, U. Mallik30, C. Chen31, J. Cochran31, W. T. Meyer31, S. Prell31, H. Ahmed32, A. V. Gritsan33, N. Arnaud34, M. Davier34, D. Derkach34, G. Grosdidier34, F. Le Diberder34, A. M. Lutz34, B. Malaescu34,§, P. Roudeau34, A. Stocchi34, G. Wormser34, D. J. Lange35, D. M. Wright35, J. P. Coleman36, J. R. Fry36, E. Gabathuler36, D. E. Hutchcroft36, D. J. Payne36, C. Touramanis36, A. J. Bevan37, F. Di Lodovico37, R. Sacco37, G. Cowan38, J. Bougher39, D. N. Brown39, C. L. Davis39, A. G. Denig40, M. Fritsch40, W. Gradl40, K. Griessinger40, A. Hafner40, E. Prencipe40, K. R. Schubert40, R. J. Barlow41,∥, G. D. Lafferty41, R. Cenci42, B. Hamilton42, A. Jawahery42, D. A. Roberts42, R. Cowan43, D. Dujmic43, G. Sciolla43, R. Cheaib44, P. M. Patel44,*, S. H. Robertson44, P. Biassoni45a,45b, N. Neri45a, F. Palombo45a,45b, L. Cremaldi46, R. Godang46,¶, P. Sonnek46, D. J. Summers46, M. Simard47, P. Taras47, G. De Nardo48a,48b, D. Monorchio48a,48b, G. Onorato48a,48b, C. Sciacca48a,48b, M. Martinelli49, G. Raven49, C. P. Jessop50, J. M. LoSecco50, K. Honscheid51, R. Kass51, J. Brau52, R. Frey52, N. B. Sinev52, D. Strom52, E. Torrence52, E. Feltresi53a,53b, M. Margoni53a,53b, M. Morandin53a, M. Posocco53a, M. Rotondo53a, G. Simi53a,53b, F. Simonetto53a,53b, R. Stroili53a,53b, S. Akar54, E. Ben-Haim54, M. Bomben54, G. R. Bonneaud54, H. Briand54, G. Calderini54, J. Chauveau54, Ph. Leruste54, G. Marchiori54, J. Ocariz54, S. Sitt54, M. Biasini55a,55b, E. Manoni55a, S. Pacetti55a,55b, A. Rossi55a, C. Angelini56a,56b, G. Batignani56a,56b, S. Bettarini56a,56b, M. Carpinelli56a,56b,**, G. Casarosa56a,56b, A. Cervelli56a,56b, M. Chrzaszcz56a,56b, F. Forti56a,56b, M. A. Giorgi56a,56b, A. Lusiani56a,56c, B. Oberhof56a,56b, E. Paoloni56a,56b, A. Perez56a, G. Rizzo56a,56b, J. J. Walsh56a, D. Lopes Pegna57, J. Olsen57, A. J. S. Smith57, R. Faccini58a,58b, F. Ferrarotto58a, F. Ferroni58a,58b, M. Gaspero58a,58b, L. Li Gioi58a, G. Piredda58a, C. Bünger59, O. Grünberg59, T. Hartmann59, T. Leddig59, C. Voß59, R. Waldi59, T. Adye60, E. O. Olaiya60, F. F. Wilson60, S. Emery61, G. Hamel de Monchenault61, G. Vasseur61, Ch. Yèche61, F. Anulli62,††, D. Aston62, D. J. Bard62, J. F. Benitez62, C. Cartaro62, M. R. Convery62, J. Dorfan62, G. P. Dubois-Felsmann62, W. Dunwoodie62, M. Ebert62, R. C. Field62, B. G. Fulsom62, A. M. Gabareen62, M. T. Graham62, C. Hast62, W. R. Innes62, P. Kim62, M. L. Kocian62, D. W. G. S. Leith62, P. Lewis62, D. Lindemann62, B. Lindquist62, S. Luitz62, V. Luth62, H. L. Lynch62, D. B. MacFarlane62, D. R. Muller62, H. Neal62, S. Nelson62, M. Perl62, T. Pulliam62, B. N. Ratcliff62, A. Roodman62, A. A. Salnikov62, R. H. Schindler62, A. Snyder62, D. Su62, M. K. Sullivan62, J. Va’vra62, A. P. Wagner62, W. F. Wang62, W. J. Wisniewski62, M. Wittgen62, D. H. Wright62, H. W. Wulsin62, V. Ziegler62, W. Park63, M. V. Purohit63, R. M. White63,‡‡, J. R. Wilson63, A. Randle-Conde63, S. J. Sekula64, M. Bellis65, P. R. Burchat65, E. M. T. Puccio65, M. S. Alam66, J. A. Ernst66, R. Gorodeisky67, N. Guttman67, D. R. Peimer67, A. Soffer67, S. M. Spanier68, J. L. Ritchie69, A. M. Ruland69, R. F. Schwitters69, B. C. Wray69, J. M. Izen70, X. C. Lou70, F. Bianchi71a,71b, F. De Mori71a,71b, A. Filippi71a, D. Gamba71a,71b, S. Zambito71a,71b, L. Lanceri72a,72b, L. Vitale72a,72b, F. Martinez-Vidal73, A. Oyanguren73, P. Villanueva-Perez73, J. Albert74, Sw. Banerjee74, F. U. Bernlochner74, H. H. F. Choi74, G. J. King74, R. Kowalewski74, M. J. Lewczuk74, T. Lueck74, I. M. Nugent74, J. M. Roney74, R. J. Sobie74, N. Tasneem74, T. J. Gershon75, P. F. Harrison75, T. E. Latham75, H. R. Band76, S. Dasu76, Y. Pan76, R. Prepost76, and S. L. Wu76 (BaBar Collaboration)
- 1Laboratoire d’Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France
- 2Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona, Spain
- 3aINFN Sezione di Bari, I-70126 Bari, Italy
- 3bDipartimento di Fisica, Università di Bari, I-70126 Bari, Italy
- 4University of Bergen, Institute of Physics, N-5007 Bergen, Norway
- 5Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA
- 6Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany
- 7University of British Columbia, Vancouver, British Columbia, Canada V6 T 1Z1
- 8Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
- 9aBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
- 9bNovosibirsk State University, Novosibirsk 630090
- 9cNovosibirsk State Technical University, Novosibirsk 630092, Russia
- 10University of California at Irvine, Irvine, California 92697, USA
- 11University of California at Riverside, Riverside, California 92521, USA
- 12University of California at Santa Barbara, Santa Barbara, California 93106, USA
- 13University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA
- 14California Institute of Technology, Pasadena, California 91125, USA
- 15University of Cincinnati, Cincinnati, Ohio 45221, USA
- 16University of Colorado, Boulder, Colorado 80309, USA
- 17Colorado State University, Fort Collins, Colorado 80523, USA
- 18Technische Universität Dortmund, Fakultät Physik, D-44221 Dortmund, Germany
- 19Technische Universität Dresden, Institut für Kern- und Teilchenphysik, D-01062 Dresden, Germany
- 20Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, F-91128 Palaiseau, France
- 21University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
- 22aINFN Sezione di Ferrara, I-44122 Ferrara, Italy
- 22bDipartimento di Fisica e Scienze della Terra, Università di Ferrara, I-44122 Ferrara, Italy
- 23INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
- 24aINFN Sezione di Genova, I-16146 Genova, Italy
- 24bDipartimento di Fisica, Università di Genova, I-16146 Genova, Italy
- 25Indian Institute of Technology Guwahati, Guwahati, Assam, 781 039, India
- 26Harvard University, Cambridge, Massachusetts 02138, USA
- 27Universität Heidelberg, Physikalisches Institut, D-69120 Heidelberg, Germany
- 28Humboldt-Universität zu Berlin, Institut für Physik, D-12489 Berlin, Germany
- 29Imperial College London, London, SW7 2AZ, United Kingdom
- 30University of Iowa, Iowa City, Iowa 52242, USA
- 31Iowa State University, Ames, Iowa 50011-3160, USA
- 32Physics Department, Jazan University, Jazan 22822, Saudia Arabia
- 33Johns Hopkins University, Baltimore, Maryland 21218, USA
- 34Laboratoire de l’Accélérateur Linéaire, IN2P3/CNRS et Université Paris-Sud 11, Centre Scientifique d’Orsay, F-91898 Orsay Cedex, France
- 35Lawrence Livermore National Laboratory, Livermore, California 94550, USA
- 36University of Liverpool, Liverpool L69 7ZE, United Kingdom
- 37Queen Mary, University of London, London, E1 4NS, United Kingdom
- 38University of London, Royal Holloway and Bedford New College, Egham, Surrey TW20 0EX, United Kingdom
- 39University of Louisville, Louisville, Kentucky 40292, USA
- 40Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz, Germany
- 41University of Manchester, Manchester M13 9PL, United Kingdom
- 42University of Maryland, College Park, Maryland 20742, USA
- 43Massachusetts Institute of Technology, Laboratory for Nuclear Science, Cambridge, Massachusetts 02139, USA
- 44McGill University, Montréal, Québec, Canada H3 A 2T8
- 45aINFN Sezione di Milano, I-20133 Milano, Italy
- 45bDipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
- 46University of Mississippi, University, Mississippi 38677, USA
- 47Université de Montréal, Physique des Particules, Montréal, Québec, Canada H3 C 3J7
- 48aINFN Sezione di Napoli, I-80126 Napoli, Italy, I-80126 Napoli, Italy
- 48bDipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
- 49NIKHEF, National Institute for Nuclear Physics and High Energy Physics, NL-1009 DB Amsterdam, Netherlands
- 50University of Notre Dame, Notre Dame, Indiana 46556, USA
- 51Ohio State University, Columbus, Ohio 43210, USA
- 52University of Oregon, Eugene, Oregon 97403, USA
- 53aINFN Sezione di Padova, I-35131 Padova, Italy, I-35131 Padova, Italy
- 53bDipartimento di Fisica, Università di Padova, I-35131 Padova, Italy
- 54Laboratoire de Physique Nucléaire et de Hautes Energies, IN2P3/CNRS, Université Pierre et Marie Curie-Paris6, Université Denis Diderot-Paris7, F-75252 Paris, France
- 55aINFN Sezione di Perugia, I-06123 Perugia, Italy
- 55bDipartimento di Fisica, Università di Perugia, I-06123 Perugia, Italy
- 56aINFN Sezione di Pisa, I-56127 Pisa, Italy
- 56bDipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
- 56cScuola Normale Superiore di Pisa, I-56127 Pisa, Italy
- 57Princeton University, Princeton, New Jersey 08544, USA
- 58aINFN Sezione di Roma, I-00185 Roma, Italy
- 58bDipartimento di Fisica, Università di Roma La Sapienza, I-00185 Roma, Italy
- 59Universität Rostock, D-18051 Rostock, Germany
- 60Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
- 61CEA, Irfu, SPP, Centre de Saclay, F-91191 Gif-sur-Yvette, France
- 62SLAC National Accelerator Laboratory, Stanford, California 94309 USA
- 63University of South Carolina, Columbia, South Carolina 29208, USA
- 64Southern Methodist University, Dallas, Texas 75275, USA
- 65Stanford University, Stanford, California 94305-4060, USA
- 66State University of New York, Albany, New York 12222, USA
- 67Tel Aviv University, School of Physics and Astronomy, Tel Aviv, 69978, Israel
- 68University of Tennessee, Knoxville, Tennessee 37996, USA
- 69University of Texas at Austin, Austin, Texas 78712, USA
- 70University of Texas at Dallas, Richardson, Texas 75083, USA
- 71aINFN Sezione di Torino, I-10125 Torino, Italy
- 71bDipartimento di Fisica, Università di Torino, I-10125 Torino, Italy
- 72aINFN Sezione di Trieste, I-34127 Trieste, Italy
- 72bDipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy
- 73IFIC, Universitat de Valencia-CSIC, E-46071 Valencia, Spain
- 74University of Victoria, Victoria, British Columbia, Canada V8 W 3P6
- 75Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
- 76University of Wisconsin, Madison, Wisconsin 53706, USA
- *Deceased.
- †Now at: University of Tabuk, Tabuk 71491, Saudi Arabia.
- ‡Also at: Università di Perugia, Dipartimento di Fisica, I-06123 Perugia, Italy.
- §Now at: Laboratoire de Physique Nucléaire et de Hautes Energies, IN2P3/CNRS, F-75252 Paris, France.
- ∥Now at: University of Huddersfield, Huddersfield HD1 3DH, United Kingdom.
- ¶Now at: University of South Alabama, Mobile, Alabama 36688, USA.
- **Also at: Università di Sassari, I-07100 Sassari, Italy.
- ††Also at: INFN Sezione di Roma, I-00185 Roma, Italy.
- ‡‡Now at: Universidad Técnica Federico Santa Maria, 2390123 Valparaiso, Chile.
Phys. Rev. Lett. 112, 211802 – Published 30 May, 2014
DOI: https://doi.org/10.1103/PhysRevLett.112.211802
Abstract
We measure the total branching fraction of the flavor-changing neutral-current process , along with partial branching fractions in bins of dilepton and hadronic system () mass, using a sample of events recorded with the BABAR detector. The admixture of charged and neutral mesons produced at PEP-II2 are reconstructed by combining a dilepton pair with 10 different final states. Extrapolating from a sum over these exclusive modes, we measure a lepton-flavor-averaged inclusive branching fraction for . Restricting our analysis exclusively to final states from which a decaying meson’s flavor can be inferred, we additionally report measurements of the direct asymmetry in bins of dilepton mass; over the full dilepton mass range, we find for a lepton-flavor-averaged sample.