Evidence for the Meson in Radiative Decay
B. Aubert1, M. Bona1, Y. Karyotakis1, J. P. Lees1, V. Poireau1, E. Prencipe1, X. Prudent1, V. Tisserand1, J. Garra Tico2 et al. (BABAR Collaboration)
J. Garra Tico2, E. Grauges2, L. Lopez3a,3b, A. Palano3a,3b, M. Pappagallo3a,3b, G. Eigen4, B. Stugu4, L. Sun4, M. Battaglia5, D. N. Brown5, L. T. Kerth5, Yu. G. Kolomensky5, G. Lynch5, I. L. Osipenkov5, K. Tackmann5, T. Tanabe5, C. M. Hawkes6, N. Soni6, A. T. Watson6, H. Koch7, T. Schroeder7, D. J. Asgeirsson8, B. G. Fulsom8, C. Hearty8, T. S. Mattison8, J. A. McKenna8, M. Barrett9, A. Khan9, A. Randle-Conde9, V. E. Blinov10, A. D. Bukin10, A. R. Buzykaev10, V. P. Druzhinin10, V. B. Golubev10, A. P. Onuchin10, S. I. Serednyakov10, Yu. I. Skovpen10, E. P. Solodov10, K. Yu. Todyshev10, M. Bondioli11, S. Curry11, I. Eschrich11, D. Kirkby11, A. J. Lankford11, P. Lund11, M. Mandelkern11, E. C. Martin11, D. P. Stoker11, S. Abachi12, C. Buchanan12, H. Atmacan13, J. W. Gary13, F. Liu13, O. Long13, G. M. Vitug13, Z. Yasin13, L. Zhang13, V. Sharma14, C. Campagnari15, T. M. Hong15, D. Kovalskyi15, M. A. Mazur15, J. D. Richman15, T. W. Beck16, A. M. Eisner16, C. A. Heusch16, J. Kroseberg16, W. S. Lockman16, A. J. Martinez16, T. Schalk16, B. A. Schumm16, A. Seiden16, L. O. Winstrom16, C. H. Cheng17, D. A. Doll17, B. Echenard17, F. Fang17, D. G. Hitlin17, I. Narsky17, T. Piatenko17, F. C. Porter17, R. Andreassen18, G. Mancinelli18, B. T. Meadows18, K. Mishra18, M. D. Sokoloff18, P. C. Bloom19, W. T. Ford19, A. Gaz19, J. F. Hirschauer19, M. Nagel19, U. Nauenberg19, J. G. Smith19, S. R. Wagner19, R. Ayad20,*, A. Soffer20,†, W. H. Toki20, R. J. Wilson20, E. Feltresi21, A. Hauke21, H. Jasper21, M. Karbach21, J. Merkel21, A. Petzold21, B. Spaan21, K. Wacker21, M. J. Kobel22, R. Nogowski22, K. R. Schubert22, R. Schwierz22, A. Volk22, D. Bernard23, G. R. Bonneaud23, E. Latour23, M. Verderi23, P. J. Clark24, S. Playfer24, J. E. Watson24, M. Andreotti25a,25b, D. Bettoni25a, C. Bozzi25a, R. Calabrese25a,25b, A. Cecchi25a,25b, G. Cibinetto25a,25b, P. Franchini25a,25b, E. Luppi25a,25b, M. Negrini25a,25b, A. Petrella25a,25b, L. Piemontese25a, V. Santoro25a,25b, R. Baldini-Ferroli26, A. Calcaterra26, R. de Sangro26, G. Finocchiaro26, S. Pacetti26, P. Patteri26, I. M. Peruzzi26,‡, M. Piccolo26, M. Rama26, A. Zallo26, R. Contri27a,27b, M. Lo Vetere27a,27b, M. R. Monge27a,27b, S. Passaggio27a, C. Patrignani27a,27b, E. Robutti27a, S. Tosi27a,27b, K. S. Chaisanguanthum28, M. Morii28, A. Adametz29, J. Marks29, S. Schenk29, U. Uwer29, F. U. Bernlochner30, V. Klose30, H. M. Lacker30, D. J. Bard31, P. D. Dauncey31, M. Tibbetts31, P. K. Behera32, X. Chai32, M. J. Charles32, U. Mallik32, J. Cochran33, H. B. Crawley33, L. Dong33, W. T. Meyer33, S. Prell33, E. I. Rosenberg33, A. E. Rubin33, Y. Y. Gao34, A. V. Gritsan34, Z. J. Guo34, N. Arnaud35, J. Béquilleux35, A. D’Orazio35, M. Davier35, J. Firmino da Costa35, G. Grosdidier35, F. Le Diberder35, V. Lepeltier35, A. M. Lutz35, S. Pruvot35, P. Roudeau35, M. H. Schune35, J. Serrano35, V. Sordini35,§, A. Stocchi35, G. Wormser35, D. J. Lange36, D. M. Wright36, I. Bingham37, J. P. Burke37, C. A. Chavez37, J. R. Fry37, E. Gabathuler37, R. Gamet37, D. E. Hutchcroft37, D. J. Payne37, C. Touramanis37, A. J. Bevan38, C. K. Clarke38, F. Di Lodovico38, R. Sacco38, M. Sigamani38, G. Cowan39, S. Paramesvaran39, A. C. Wren39, D. N. Brown40, C. L. Davis40, A. G. Denig41, M. Fritsch41, W. Gradl41, K. E. Alwyn42, D. Bailey42, R. J. Barlow42, G. Jackson42, G. D. Lafferty42, T. J. West42, J. I. Yi42, J. Anderson43, C. Chen43, A. Jawahery43, D. A. Roberts43, G. Simi43, J. M. Tuggle43, C. Dallapiccola44, E. Salvati44, S. Saremi44, R. Cowan45, D. Dujmic45, P. H. Fisher45, S. W. Henderson45, G. Sciolla45, M. Spitznagel45, F. Taylor45, R. K. Yamamoto45, M. Zhao45, P. M. Patel46, S. H. Robertson46, A. Lazzaro47a,47b, V. Lombardo47a, F. Palombo47a,47b, J. M. Bauer48, L. Cremaldi48, R. Godang48,∥, R. Kroeger48, D. J. Summers48, H. W. Zhao48, M. Simard49, P. Taras49, H. Nicholson50, G. De Nardo51a,51b, L. Lista51a, D. Monorchio51a,51b, G. Onorato51a,51b, C. Sciacca51a,51b, G. Raven52, H. L. Snoek52, C. P. Jessop53, K. J. Knoepfel53, J. M. LoSecco53, W. F. Wang53, L. A. Corwin54, K. Honscheid54, H. Kagan54, R. Kass54, J. P. Morris54, A. M. Rahimi54, J. J. Regensburger54, S. J. Sekula54, Q. K. Wong54, N. L. Blount55, J. Brau55, R. Frey55, O. Igonkina55, J. A. Kolb55, M. Lu55, R. Rahmat55, N. B. Sinev55, D. Strom55, J. Strube55, E. Torrence55, G. Castelli56a,56b, N. Gagliardi56a,56b, M. Margoni56a,56b, M. Morandin56a, M. Posocco56a, M. Rotondo56a, F. Simonetto56a,56b, R. Stroili56a,56b, C. Voci56a,56b, P. del Amo Sanchez57, E. Ben-Haim57, H. Briand57, J. Chauveau57, O. Hamon57, Ph. Leruste57, J. Ocariz57, A. Perez57, J. Prendki57, S. Sitt57, L. Gladney58, M. Biasini59a,59b, E. Manoni59a,59b, C. Angelini60a,60b, G. Batignani60a,60b, S. Bettarini60a,60b, G. Calderini60a,60b,¶, M. Carpinelli60a,60b,**, A. Cervelli60a,60b, F. Forti60a,60b, M. A. Giorgi60a,60b, A. Lusiani60a,60c, G. Marchiori60a,60b, M. Morganti60a,60b, N. Neri60a,60b, E. Paoloni60a,60b, G. Rizzo60a,60b, J. J. Walsh60a, D. Lopes Pegna61, C. Lu61, J. Olsen61, A. J. S. Smith61, A. V. Telnov61, F. Anulli62a, E. Baracchini62a,62b, G. Cavoto62a, R. Faccini62a,62b, F. Ferrarotto62a, F. Ferroni62a,62b, M. Gaspero62a,62b, P. D. Jackson62a, L. Li Gioi62a, M. A. Mazzoni62a, S. Morganti62a, G. Piredda62a, F. Renga62a,62b, C. Voena62a, M. Ebert63, T. Hartmann63, H. Schröder63, R. Waldi63, T. Adye64, B. Franek64, E. O. Olaiya64, F. F. Wilson64, S. Emery65, L. Esteve65, G. Hamel de Monchenault65, W. Kozanecki65, G. Vasseur65, Ch. Yèche65, M. Zito65, X. R. Chen66, H. Liu66, W. Park66, M. V. Purohit66, R. M. White66, J. R. Wilson66, M. T. Allen67, D. Aston67, R. Bartoldus67, J. F. Benitez67, R. Cenci67, J. P. Coleman67, M. R. Convery67, J. C. Dingfelder67, J. Dorfan67, G. P. Dubois-Felsmann67, W. Dunwoodie67, R. C. Field67, A. M. Gabareen67, M. T. Graham67, P. Grenier67, C. Hast67, W. R. Innes67, J. Kaminski67, M. H. Kelsey67, H. Kim67, P. Kim67, M. L. Kocian67, D. W. G. S. Leith67, S. Li67, B. Lindquist67, S. Luitz67, V. Luth67, H. L. Lynch67, D. B. MacFarlane67, H. Marsiske67, R. Messner67, D. R. Muller67, H. Neal67, S. Nelson67, C. P. O’Grady67, I. Ofte67, M. Perl67, B. N. Ratcliff67, A. Roodman67, A. A. Salnikov67, R. H. Schindler67, J. Schwiening67, A. Snyder67, D. Su67, M. K. Sullivan67, K. Suzuki67, S. K. Swain67, J. M. Thompson67, J. Va’vra67, A. P. Wagner67, M. Weaver67, C. A. West67, W. J. Wisniewski67, M. Wittgen67, D. H. Wright67, H. W. Wulsin67, A. K. Yarritu67, K. Yi67, C. C. Young67, V. Ziegler67, P. R. Burchat68, A. J. Edwards68, T. S. Miyashita68, S. Ahmed69, M. S. Alam69, J. A. Ernst69, B. Pan69, M. A. Saeed69, S. B. Zain69, S. M. Spanier70, B. J. Wogsland70, R. Eckmann71, J. L. Ritchie71, A. M. Ruland71, C. J. Schilling71, R. F. Schwitters71, B. W. Drummond72, J. M. Izen72, X. C. Lou72, F. Bianchi73a,73b, D. Gamba73a,73b, M. Pelliccioni73a,73b, M. Bomben74a,74b, L. Bosisio74a,74b, C. Cartaro74a,74b, G. Della Ricca74a,74b, L. Lanceri74a,74b, L. Vitale74a,74b, V. Azzolini75, N. Lopez-March75, F. Martinez-Vidal75, D. A. Milanes75, A. Oyanguren75, J. Albert76, Sw. Banerjee76, B. Bhuyan76, H. H. F. Choi76, K. Hamano76, G. J. King76, R. Kowalewski76, M. J. Lewczuk76, I. M. Nugent76, J. M. Roney76, R. J. Sobie76, T. J. Gershon77, P. F. Harrison77, J. Ilic77, T. E. Latham77, G. B. Mohanty77, E. M. T. Puccio77, H. R. Band78, X. Chen78, S. Dasu78, K. T. Flood78, Y. Pan78, R. Prepost78, C. O. Vuosalo78, and S. L. Wu78 (BABAR Collaboration)
- 1Laboratoire de Physique des Particules, IN2P3/CNRS et Université de Savoie, 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
- 3bDipartmento 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
- 6University of Birmingham, Birmingham, B15 2TT, United Kingdom
- 7Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany
- 8University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
- 9Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
- 10Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia
- 11University of California at Irvine, Irvine, California 92697, USA
- 12University of California at Los Angeles, Los Angeles, California 90024, USA
- 13University of California at Riverside, Riverside, California 92521, USA
- 14University of California at San Diego, La Jolla, California 92093, USA
- 15University of California at Santa Barbara, Santa Barbara, California 93106, USA
- 16University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA
- 17California Institute of Technology, Pasadena, California 91125, USA
- 18University of Cincinnati, Cincinnati, Ohio 45221, USA
- 19University of Colorado, Boulder, Colorado 80309, USA
- 20Colorado State University, Fort Collins, Colorado 80523, USA
- 21Technische Universität Dortmund, Fakultät Physik, D-44221 Dortmund, Germany
- 22Technische Universität Dresden, Institut für Kern- und Teilchenphysik, D-01062 Dresden, Germany
- 23Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, F-91128 Palaiseau, France
- 24University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
- 25aINFN Sezione di Ferrara, I-44100 Ferrara, Italy
- 25bDipartimento di Fisica, Università di Ferrara, I-44100 Ferrara, Italy
- 26INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
- 27aINFN Sezione di Genova, I-16146 Genova, Italy
- 27bDipartimento di Fisica, Università di Genova, I-16146 Genova, Italy
- 28Harvard University, Cambridge, Massachusetts 02138, USA
- 29Universität Heidelberg, Physikalisches Institut, Philosophenweg 12, D-69120 Heidelberg, Germany
- 30Humboldt-Universität zu Berlin, Institut für Physik, Newtonstr. 15, D-12489 Berlin, Germany
- 31Imperial College London, London, SW7 2AZ, United Kingdom
- 32University of Iowa, Iowa City, Iowa 52242, USA
- 33Iowa State University, Ames, Iowa 50011-3160, USA
- 34Johns Hopkins University, Baltimore, Maryland 21218, USA
- 35Laboratoire de l’Accélérateur Linéaire, IN2P3/CNRS et Université Paris-Sud 11, Centre Scientifique d’Orsay, B. P. 34, F-91898 Orsay Cedex, France
- 36Lawrence Livermore National Laboratory, Livermore, California 94550, USA
- 37University of Liverpool, Liverpool L69 7ZE, United Kingdom
- 38Queen Mary, University of London, London, E1 4NS, United Kingdom
- 39University of London, Royal Holloway and Bedford New College, Egham, Surrey TW20 0EX, United Kingdom
- 40University of Louisville, Louisville, Kentucky 40292, USA
- 41Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz, Germany
- 42University of Manchester, Manchester M13 9PL, United Kingdom
- 43University of Maryland, College Park, Maryland 20742, USA
- 44University of Massachusetts, Amherst, Massachusetts 01003, USA
- 45Massachusetts Institute of Technology, Laboratory for Nuclear Science, Cambridge, Massachusetts 02139, USA
- 46McGill University, Montréal, Québec, Canada H3A 2T8
- 47aINFN Sezione di Milano, I-20133 Milano, Italy
- 47bDipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
- 48University of Mississippi, University, Mississippi 38677, USA
- 49Université de Montréal, Physique des Particules, Montréal, Québec, Canada H3C 3J7
- 50Mount Holyoke College, South Hadley, Massachusetts 01075, USA
- 51aINFN Sezione di Napoli, I-80126 Napoli, Italy
- 51bDipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
- 52NIKHEF, National Institute for Nuclear Physics and High Energy Physics, NL-1009 DB Amsterdam, The Netherlands
- 53University of Notre Dame, Notre Dame, Indiana 46556, USA
- 54Ohio State University, Columbus, Ohio 43210, USA
- 55University of Oregon, Eugene, Oregon 97403, USA
- 56aINFN Sezione di Padova, I-35131 Padova, Italy
- 56bDipartimento di Fisica, Università di Padova, I-35131 Padova, Italy
- 57Laboratoire de Physique Nucléaire et de Hautes Energies, IN2P3/CNRS, Université Pierre et Marie Curie-Paris6, Université Denis Diderot-Paris7, F-75252 Paris, France
- 58University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
- 59aINFN Sezione di Perugia, I-06100 Perugia, Italy
- 59bDipartimento di Fisica, Università di Perugia, I-06100 Perugia, Italy
- 60aINFN Sezione di Pisa, I-56127 Pisa, Italy
- 60bDipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
- 60cScuola Normale Superiore di Pisa, I-56127 Pisa, Italy
- 61Princeton University, Princeton, New Jersey 08544, USA
- 62aINFN Sezione di Roma, I-00185 Roma, Italy
- 62bDipartimento di Fisica, Università di Roma La Sapienza, I-00185 Roma, Italy
- 63Universität Rostock, D-18051 Rostock, Germany
- 64Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
- 65CEA, Irfu, SPP, Centre de Saclay, F-91191 Gif-sur-Yvette, France
- 66University of South Carolina, Columbia, South Carolina 29208, USA
- 67SLAC National Accelerator Laboratory, Stanford, California 94309, USA
- 68Stanford University, Stanford, California 94305-4060, USA
- 69State University of New York, Albany, New York 12222, USA
- 70University of Tennessee, Knoxville, Tennessee 37996, USA
- 71University of Texas at Austin, Austin, Texas 78712, USA
- 72University of Texas at Dallas, Richardson, Texas 75083, USA
- 73aINFN Sezione di Torino, I-10125 Torino, Italy
- 73bDipartimento di Fisica Sperimentale, Università di Torino, I-10125 Torino, Italy
- 74aINFN Sezione di Trieste, I-34127 Trieste, Italy
- 74bDipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy
- 75IFIC, Universitat de Valencia-CSIC, E-46071 Valencia, Spain
- 76University of Victoria, Victoria, British Columbia, Canada V8W 3P6
- 77Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
- 78University of Wisconsin, Madison, Wisconsin 53706, USA
- *Present address: Temple University, Philadelphia, PA 19122, USA.
- †Present address: Tel Aviv University, Tel Aviv, 69978, Israel.
- ‡Also with Università di Perugia, Dipartimento di Fisica, Perugia, Italy.
- §Also with Università di Roma La Sapienza, I-00185 Roma, Italy.
- ∥Present address: University of South Alabama, Mobile, AL 36688, USA.
- ¶Also with Laboratoire de Physique Nucléaire et de Hautes Energies, IN2P3/CNRS, Université Pierre et Marie Curie-Paris6, Université Denis Diderot-Paris7, F-75252 Paris, France.
- **Also with Università di Sassari, Sassari, Italy.
Phys. Rev. Lett. 103, 161801 – Published 15 October, 2009
DOI: https://doi.org/10.1103/PhysRevLett.103.161801
Abstract
We have performed a search for the meson in the radiative decay of the resonance using a sample of events recorded with the BABAR detector at the PEP-II factory at the SLAC National Accelerator Laboratory. We observe a peak in the photon energy spectrum at , corresponding to an mass of . The branching fraction for the decay is determined to be . We find the ratio of branching fractions .