Phys. Rev. D
80,
111105(R)
(2009)
[8 pages]
Model-independent search for the decay B+→l+νlγ
B. Aubert et al.
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B. Aubert1, Y. Karyotakis1, J. P. Lees1, V. Poireau1, E. Prencipe1, X. Prudent1, V. Tisserand1, J. Garra Tico2, E. Grauges2, M. Martinelli3a,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, H. Atmacan12, J. W. Gary12, F. Liu12, O. Long12, G. M. Vitug12, Z. Yasin12, V. Sharma13, C. Campagnari14, T. M. Hong14, D. Kovalskyi14, M. A. Mazur14, J. D. Richman14, T. W. Beck15, A. M. Eisner15, C. A. Heusch15, J. Kroseberg15, W. S. Lockman15, A. J. Martinez15, T. Schalk15, B. A. Schumm15, A. Seiden15, L. Wang15, L. O. Winstrom15, C. H. Cheng16, D. A. Doll16, B. Echenard16, F. Fang16, D. G. Hitlin16, I. Narsky16, P. Ongmongkolkul16, T. Piatenko16, F. C. Porter16, R. Andreassen17, G. Mancinelli17, B. T. Meadows17, K. Mishra17, M. D. Sokoloff17, P. C. Bloom18, W. T. Ford18, A. Gaz18, J. F. Hirschauer18, M. Nagel18, U. Nauenberg18, J. G. Smith18, S. R. Wagner18, R. Ayad19,†, W. H. Toki19, R. J. Wilson19, E. Feltresi20, A. Hauke20, H. Jasper20, T. M. Karbach20, J. Merkel20, A. Petzold20, B. Spaan20, K. Wacker20, M. J. Kobel21, R. Nogowski21, K. R. Schubert21, R. Schwierz21, A. Volk21, D. Bernard22, E. Latour22, M. Verderi22, P. J. Clark23, S. Playfer23, J. E. Watson23, M. Andreotti24a,24b, D. Bettoni24a, C. Bozzi24a, R. Calabrese24a,24b, A. Cecchi24a,24b, G. Cibinetto24a,24b, E. Fioravanti24a,24b, P. Franchini24a,24b, E. Luppi24a,24b, M. Munerato24a,24b, M. Negrini24a,24b, A. Petrella24a,24b, L. Piemontese24a, V. Santoro24a,24b, R. Baldini-Ferroli25, A. Calcaterra25, R. de Sangro25, G. Finocchiaro25, S. Pacetti25, P. Patteri25, I. M. Peruzzi25,‡, M. Piccolo25, M. Rama25, A. Zallo25, R. Contri26a,26b, E. Guido26a,26b, M. Lo Vetere26a,26b, M. R. Monge26a,26b, S. Passaggio26a, C. Patrignani26a,26b, E. Robutti26a, S. Tosi26a,26b, K. S. Chaisanguanthum27, M. Morii27, A. Adametz28, J. Marks28, S. Schenk28, U. Uwer28, F. U. Bernlochner29, V. Klose29, H. M. Lacker29, D. J. Bard30, P. D. Dauncey30, M. Tibbetts30, P. K. Behera31, M. J. Charles31, U. Mallik31, J. Cochran32, H. B. Crawley32, L. Dong32, V. Eyges32, W. T. Meyer32, S. Prell32, E. I. Rosenberg32, A. E. Rubin32, Y. Y. Gao33, A. V. Gritsan33, Z. J. Guo33, N. Arnaud34, J. Béquilleux34, A. D’Orazio34, M. Davier34, D. Derkach34, J. Firmino da Costa34, G. Grosdidier34, F. Le Diberder34, V. Lepeltier34, A. M. Lutz34, B. Malaescu34, S. Pruvot34, P. Roudeau34, M. H. Schune34, J. Serrano34, V. Sordini34,§, A. Stocchi34, G. Wormser34, D. J. Lange35, D. M. Wright35, I. Bingham36, J. P. Burke36, C. A. Chavez36, J. R. Fry36, E. Gabathuler36, R. Gamet36, D. E. Hutchcroft36, D. J. Payne36, C. Touramanis36, A. J. Bevan37, C. K. Clarke37, F. Di Lodovico37, R. Sacco37, M. Sigamani37, G. Cowan38, S. Paramesvaran38, A. C. Wren38, D. N. Brown39, C. L. Davis39, A. G. Denig40, M. Fritsch40, W. Gradl40, A. Hafner40, K. E. Alwyn41, D. Bailey41, R. J. Barlow41, G. Jackson41, G. D. Lafferty41, T. J. West41, J. I. Yi41, J. Anderson42, C. Chen42, A. Jawahery42, D. A. Roberts42, G. Simi42, J. M. Tuggle42, C. Dallapiccola43, E. Salvati43, R. Cowan44, D. Dujmic44, P. H. Fisher44, S. W. Henderson44, G. Sciolla44, M. Spitznagel44, R. K. Yamamoto44, M. Zhao44, D. M. Lindemann45, P. M. Patel45, S. H. Robertson45, M. Schram45, P. Biassoni46a,46b, A. Lazzaro46a,46b, V. Lombardo46a, F. Palombo46a,46b, S. Stracka46a,46b, J. M. Bauer47, L. Cremaldi47, R. Godang47,**, R. Kroeger47, P. Sonnek47, D. J. Summers47, H. W. Zhao47, M. Simard48, P. Taras48, H. Nicholson49, G. De Nardo50a,50b, L. Lista50a, D. Monorchio50a,50b, G. Onorato50a,50b, C. Sciacca50a,50b, G. Raven51, H. L. Snoek51, C. P. Jessop52, K. J. Knoepfel52, J. M. LoSecco52, W. F. Wang52, L. A. Corwin53, K. Honscheid53, H. Kagan53, R. Kass53, J. P. Morris53, A. M. Rahimi53, J. J. Regensburger53, S. J. Sekula53, Q. K. Wong53, N. L. Blount54, J. Brau54, R. Frey54, O. Igonkina54, J. A. Kolb54, M. Lu54, R. Rahmat54, N. B. Sinev54, D. Strom54, J. Strube54, E. Torrence54, G. Castelli55a,55b, N. Gagliardi55a,55b, M. Margoni55a,55b, M. Morandin55a, M. Posocco55a, M. Rotondo55a, F. Simonetto55a,55b, R. Stroili55a,55b, C. Voci55a,55b, P. del Amo Sanchez56, E. Ben-Haim56, G. R. Bonneaud56, H. Briand56, J. Chauveau56, O. Hamon56, Ph. Leruste56, G. Marchiori56, J. Ocariz56, A. Perez56, J. Prendki56, S. Sitt56, L. Gladney57, M. Biasini58a,58b, E. Manoni58a,58b, C. Angelini59a,59b, G. Batignani59a,59b, S. Bettarini59a,59b, G. Calderini59a,59b,††, M. Carpinelli59a,59b,‡‡, A. Cervelli59a,59b, F. Forti59a,59b, M. A. Giorgi59a,59b, A. Lusiani59a,59c, M. Morganti59a,59b, N. Neri59a,59b, E. Paoloni59a,59b, G. Rizzo59a,59b, J. J. Walsh59a, D. Lopes Pegna60, C. Lu60, J. Olsen60, A. J. S. Smith60, A. V. Telnov60, F. Anulli61a, E. Baracchini61a,61b, G. Cavoto61a, R. Faccini61a,61b, F. Ferrarotto61a, F. Ferroni61a,61b, M. Gaspero61a,61b, P. D. Jackson61a, L. Li Gioi61a, M. A. Mazzoni61a, S. Morganti61a, G. Piredda61a, F. Renga61a,61b, C. Voena61a, M. Ebert62, T. Hartmann62, H. Schröder62, R. Waldi62, T. Adye63, B. Franek63, E. O. Olaiya63, F. F. Wilson63, S. Emery64, L. Esteve64, G. Hamel de Monchenault64, W. Kozanecki64, G. Vasseur64, Ch. Yèche64, M. Zito64, M. T. Allen65, D. Aston65, R. Bartoldus65, J. F. Benitez65, R. Cenci65, J. P. Coleman65, M. R. Convery65, J. C. Dingfelder65, J. Dorfan65, G. P. Dubois-Felsmann65, W. Dunwoodie65, R. C. Field65, M. Franco Sevilla65, A. M. Gabareen65, M. T. Graham65, P. Grenier65, C. Hast65, W. R. Innes65, J. Kaminski65, M. H. Kelsey65, H. Kim65, P. Kim65, M. L. Kocian65, D. W. G. S. Leith65, S. Li65, B. Lindquist65, S. Luitz65, V. Luth65, H. L. Lynch65, D. B. MacFarlane65, H. Marsiske65, R. Messner65,*, D. R. Muller65, H. Neal65, S. Nelson65, C. P. O’Grady65, I. Ofte65, M. Perl65, B. N. Ratcliff65, A. Roodman65, A. A. Salnikov65, R. H. Schindler65, J. Schwiening65, A. Snyder65, D. Su65, M. K. Sullivan65, K. Suzuki65, S. K. Swain65, J. M. Thompson65, J. Va’vra65, A. P. Wagner65, M. Weaver65, C. A. West65, W. J. Wisniewski65, M. Wittgen65, D. H. Wright65, H. W. Wulsin65, A. K. Yarritu65, C. C. Young65, V. Ziegler65, X. R. Chen66, H. Liu66, W. Park66, M. V. Purohit66, R. M. White66, J. R. Wilson66, P. R. Burchat67, A. J. Edwards67, T. S. Miyashita67, S. Ahmed68, M. S. Alam68, J. A. Ernst68, B. Pan68, M. A. Saeed68, S. B. Zain68, A. Soffer69, S. M. Spanier70, B. J. Wogsland70, R. Eckmann71, J. L. Ritchie71, A. M. Ruland71, C. J. Schilling71, R. F. Schwitters71, B. C. Wray71, 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 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
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 Riverside, Riverside, California 92521, USA
13University of California at San Diego, La Jolla, California 92093, USA
14University of California at Santa Barbara, Santa Barbara, California 93106, USA
15University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA
16California Institute of Technology, Pasadena, California 91125, USA
17University of Cincinnati, Cincinnati, Ohio 45221, USA
18University of Colorado, Boulder, Colorado 80309, USA
19Colorado State University, Fort Collins, Colorado 80523, USA
20Technische Universität Dortmund, Fakultät Physik, D-44221 Dortmund, Germany
21Technische Universität Dresden, Institut für Kern- und Teilchenphysik, D-01062 Dresden, Germany
22Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, F-91128 Palaiseau, France
23University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
24aINFN Sezione di Ferrara, I-44100 Ferrara, Italy
24bDipartimento di Fisica, Università di Ferrara, I-44100 Ferrara, Italy
25INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
26aINFN Sezione di Genova, I-16146 Genova, Italy
26bDipartimento di Fisica, Università di Genova, I-16146 Genova, Italy
27Harvard University, Cambridge, Massachusetts 02138, USA
28Universität Heidelberg, Physikalisches Institut, Philosophenweg 12, D-69120 Heidelberg, Germany
29Humboldt-Universität zu Berlin, Institut für Physik, Newtonstr. 15, D-12489 Berlin, Germany
30Imperial College London, London, SW7 2AZ, United Kingdom
31University of Iowa, Iowa City, Iowa 52242, USA
32Iowa State University, Ames, Iowa 50011-3160, USA
33Johns Hopkins University, Baltimore, Maryland 21218, USA
34Laboratoire de l’Accélérateur Linéaire, IN2P3/CNRS et Université Paris-Sud 11, Centre Scientifique d’Orsay, B. P. 34, 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
43University of Massachusetts, Amherst, Massachusetts 01003, USA
44Massachusetts Institute of Technology, Laboratory for Nuclear Science, Cambridge, Massachusetts 02139, USA
45McGill University, Montréal, Québec, Canada H3A 2T8
46aINFN Sezione di Milano, I-20133 Milano, Italy
46bDipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
47University of Mississippi, University, Mississippi 38677, USA
48Université de Montréal, Physique des Particules, Montréal, Québec, Canada H3C 3J7
49Mount Holyoke College, South Hadley, Massachusetts 01075, USA
50aINFN Sezione di Napoli, I-80126 Napoli, Italy
50bDipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
51NIKHEF, National Institute for Nuclear Physics and High Energy Physics, NL-1009 DB Amsterdam, The Netherlands
52University of Notre Dame, Notre Dame, Indiana 46556, USA
53Ohio State University, Columbus, Ohio 43210, USA
54University of Oregon, Eugene, Oregon 97403, USA
55aINFN Sezione di Padova, I-35131 Padova, Italy
55bDipartimento di Fisica, Università di Padova, I-35131 Padova, Italy
56Laboratoire de Physique Nucléaire et de Hautes Energies, IN2P3/CNRS, Université Pierre et Marie Curie-Paris6, Université Denis Diderot-Paris7, F-75252 Paris, France
57University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
58aINFN Sezione di Perugia, I-06100 Perugia, Italy
58bDipartimento di Fisica, Università di Perugia, I-06100 Perugia, Italy
59aINFN Sezione di Pisa, I-56127 Pisa, Italy
59bDipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
59cScuola Normale Superiore di Pisa, I-56127 Pisa, Italy
60Princeton University, Princeton, New Jersey 08544, USA
61aINFN Sezione di Roma, I-00185 Roma, Italy
61bDipartimento di Fisica, Università di Roma La Sapienza, I-00185 Roma, Italy
62Universität Rostock, D-18051 Rostock, Germany
63Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
64CEA, Irfu, SPP, Centre de Saclay, F-91191 Gif-sur-Yvette, France
65SLAC National Accelerator Laboratory, Stanford, California 94309 USA
66University of South Carolina, Columbia, South Carolina 29208, USA
67Stanford University, Stanford, California 94305-4060, USA
68State University of New York, Albany, New York 12222, USA
69Tel Aviv University, School of Physics and Astronomy, Tel Aviv, 69978, Israel
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
Received 14 July 2009; published 17 December 2009
We present a search for the radiative leptonic decay B+→ℓ+νℓγ, where ℓ=e, μ, using a data sample of 465×106 BB̅ pairs collected by the BABAR experiment. In this analysis, we fully reconstruct the hadronic decay of one of the B mesons in Υ(4S)→B+B- decays, then search for evidence of B+→ℓ+νℓγ in the rest of the event. We observe no significant evidence of signal decays and report model-independent branching fraction upper limits of B(B+→e+νeγ)<17×10-6, B(B+→μ+νμγ)<24×10-6, and B(B+→ℓ+νℓγ)<15.6×10-6 (ℓ=e or μ), all at the 90% confidence level.
© 2009 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.80.111105
DOI:
10.1103/PhysRevD.80.111105
PACS:
13.20.He, 12.38.Qk, 14.40.Nd
*Deceased. †Now at Temple University, Philadelphia, PA 19122, USA. ‡Also with Università di Perugia, Dipartimento di Fisica, Perugia, Italy. §Also with Università di Roma La Sapienza, I-00185 Roma, Italy. **Now at 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.
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