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  • Rapid Communication

Measurement of the branching fraction for inclusive semileptonic B meson decays

B. Aubert1, D. Boutigny1, J.-M. Gaillard1, A. Hicheur1, Y. Karyotakis1, J. P. Lees1, P. Robbe1, V. Tisserand1, A. Zghiche1 et al. (BABAR Collaboration)

A. Zghiche1, A. Palano2, A. Pompili2, J. C. Chen3, N. D. Qi3, G. Rong3, P. Wang3, Y. S. Zhu3, G. Eigen4, I. Ofte4, B. Stugu4, G. S. Abrams5, A. W. Borgland5, A. B. Breon5, D. N. Brown5, J. Button-Shafer5, R. N. Cahn5, E. Charles5, M. S. Gill5, A. V. Gritsan5, Y. Groysman5, R. G. Jacobsen5, R. W. Kadel5, J. Kadyk5, L. T. Kerth5, Yu. G. Kolomensky5, J. F. Kral5, C. LeClerc5, M. E. Levi5, G. Lynch5, L. M. Mir5, P. J. Oddone5, T. J. Orimoto5, M. Pripstein5, N. A. Roe5, A. Romosan5, M. T. Ronan5, V. G. Shelkov5, A. V. Telnov5, W. A. Wenzel5, T. J. Harrison6, C. M. Hawkes6, D. J. Knowles6, S. W. O’Neale6, R. C. Penny6, A. T. Watson6, N. K. Watson6, T. Deppermann7, K. Goetzen7, H. Koch7, B. Lewandowski7, K. Peters7, H. Schmuecker7, M. Steinke7, N. R. Barlow8, W. Bhimji8, J. T. Boyd8, N. Chevalier8, P. J. Clark8, W. N. Cottingham8, C. Mackay8, F. F. Wilson8, K. Abe9, C. Hearty9, T. S. Mattison9, J. A. McKenna9, D. Thiessen9, S. Jolly10, A. K. McKemey10, V. E. Blinov11, A. D. Bukin11, A. R. Buzykaev11, V. B. Golubev11, V. N. Ivanchenko11, A. A. Korol11, E. A. Kravchenko11, A. P. Onuchin11, S. I. Serednyakov11, Yu. I. Skovpen11, A. N. Yushkov11, D. Best12, M. Chao12, D. Kirkby12, A. J. Lankford12, M. Mandelkern12, S. McMahon12, D. P. Stoker12, C. Buchanan13, S. Chun13, H. K. Hadavand14, E. J. Hill14, D. B. MacFarlane14, H. Paar14, S. Prell14, Sh. Rahatlou14, G. Raven14, U. Schwanke14, V. Sharma14, J. W. Berryhill15, C. Campagnari15, B. Dahmes15, P. A. Hart15, N. Kuznetsova15, S. L. Levy15, O. Long15, A. Lu15, M. A. Mazur15, J. D. Richman15, W. Verkerke15, J. Beringer16, A. M. Eisner16, M. Grothe16, C. A. Heusch16, W. S. Lockman16, T. Pulliam16, T. Schalk16, R. E. Schmitz16, B. A. Schumm16, A. Seiden16, M. Turri16, W. Walkowiak16, D. C. Williams16, M. G. Wilson16, E. Chen17, G. P. Dubois-Felsmann17, A. Dvoretskii17, D. G. Hitlin17, F. C. Porter17, A. Ryd17, A. Samuel17, S. Yang17, S. Jayatilleke18, G. Mancinelli18, B. T. Meadows18, M. D. Sokoloff18, T. Barillari19, P. Bloom19, W. T. Ford19, U. Nauenberg19, A. Olivas19, P. Rankin19, J. Roy19, J. G. Smith19, W. C. van Hoek19, L. Zhang19, J. L. Harton20, T. Hu20, M. Krishnamurthy20, A. Soffer20, W. H. Toki20, R. J. Wilson20, J. Zhang20, D. Altenburg21, T. Brandt21, J. Brose21, T. Colberg21, M. Dickopp21, R. S. Dubitzky21, A. Hauke21, E. Maly21, R. Müller-Pfefferkorn21, S. Otto21, K. R. Schubert21, R. Schwierz21, B. Spaan21, L. Wilden21, D. Bernard22, G. R. Bonneaud22, F. Brochard22, J. Cohen-Tanugi22, S. Ferrag22, S. T’Jampens22, Ch. Thiebaux22, G. Vasileiadis22, M. Verderi22, A. Anjomshoaa23, R. Bernet23, A. Khan23, D. Lavin23, F. Muheim23, S. Playfer23, J. E. Swain23, J. Tinslay23, M. Falbo24, C. Borean25, C. Bozzi25, L. Piemontese25, A. Sarti25, E. Treadwell26, F. Anulli27,*, R. Baldini-Ferroli27, A. Calcaterra27, R. de Sangro27, D. Falciai27, G. Finocchiaro27, P. Patteri27, I. M. Peruzzi27,*, M. Piccolo27, A. Zallo27, S. Bagnasco28, A. Buzzo28, R. Contri28, G. Crosetti28, M. Lo Vetere28, M. Macri28, M. R. Monge28, S. Passaggio28, F. C. Pastore28, C. Patrignani28, E. Robutti28, A. Santroni28, S. Tosi28, S. Bailey29, M. Morii29, R. Bartoldus30, G. J. Grenier30, U. Mallik30, J. Cochran31, H. B. Crawley31, J. Lamsa31, W. T. Meyer31, E. I. Rosenberg31, J. Yi31, M. Davier32, G. Grosdidier32, A. Höcker32, H. M. Lacker32, S. Laplace32, F. Le Diberder32, V. Lepeltier32, A. M. Lutz32, T. C. Petersen32, S. Plaszczynski32, M. H. Schune32, L. Tantot32, S. Trincaz-Duvoid32, G. Wormser32, R. M. Bionta33, V. Brigljević33, D. J. Lange33, K. van Bibber33, D. M. Wright33, A. J. Bevan34, J. R. Fry34, E. Gabathuler34, R. Gamet34, M. George34, M. Kay34, D. J. Payne34, R. J. Sloane34, C. Touramanis34, M. L. Aspinwall35, D. A. Bowerman35, P. D. Dauncey35, U. Egede35, I. Eschrich35, G. W. Morton35, J. A. Nash35, P. Sanders35, D. Smith35, G. P. Taylor35, J. J. Back36, G. Bellodi36, P. Dixon36, P. F. Harrison36, R. J. L. Potter36, H. W. Shorthouse36, P. Strother36, P. B. Vidal36, G. Cowan37, H. U. Flaecher37, S. George37, M. G. Green37, A. Kurup37, C. E. Marker37, T. R. McMahon37, S. Ricciardi37, F. Salvatore37, G. Vaitsas37, M. A. Winter37, D. Brown38, C. L. Davis38, J. Allison39, R. J. Barlow39, A. C. Forti39, F. Jackson39, G. D. Lafferty39, A. J. Lyon39, N. Savvas39, J. H. Weatherall39, J. C. Williams39, A. Farbin40, A. Jawahery40, V. Lillard40, D. A. Roberts40, J. R. Schieck40, G. Blaylock41, C. Dallapiccola41, K. T. Flood41, S. S. Hertzbach41, R. Kofler41, V. B. Koptchev41, T. B. Moore41, H. Staengle41, S. Willocq41, B. Brau42, R. Cowan42, G. Sciolla42, F. Taylor42, R. K. Yamamoto42, M. Milek43, P. M. Patel43, F. Palombo44, J. M. Bauer45, L. Cremaldi45, V. Eschenburg45, R. Kroeger45, J. Reidy45, D. A. Sanders45, D. J. Summers45, C. Hast46, P. Taras46, H. Nicholson47, C. Cartaro48, N. Cavallo48, G. De Nardo48, F. Fabozzi48, C. Gatto48, L. Lista48, P. Paolucci48, D. Piccolo48, C. Sciacca48, J. M. LoSecco49, J. R. G. Alsmiller50, T. A. Gabriel50, J. Brau51, R. Frey51, M. Iwasaki51, C. T. Potter51, N. B. Sinev51, D. Strom51, E. Torrence51, F. Colecchia52, A. Dorigo52, F. Galeazzi52, M. Margoni52, M. Morandin52, M. Posocco52, M. Rotondo52, F. Simonetto52, R. Stroili52, C. Voci52, M. Benayoun53, H. Briand53, J. Chauveau53, P. David53, Ch. de la Vaissière53, L. Del Buono53, O. Hamon53, Ph. Leruste53, J. Ocariz53, M. Pivk53, L. Roos53, J. Stark53, P. F. Manfredi54, V. Re54, V. Speziali54, L. Gladney55, Q. H. Guo55, J. Panetta55, C. Angelini56, G. Batignani56, S. Bettarini56, M. Bondioli56, F. Bucci56, G. Calderini56, E. Campagna56, M. Carpinelli56, F. Forti56, M. A. Giorgi56, A. Lusiani56, G. Marchiori56, F. Martinez-Vidal56, M. Morganti56, N. Neri56, E. Paoloni56, M. Rama56, G. Rizzo56, F. Sandrelli56, G. Triggiani56, J. Walsh56, M. Haire57, D. Judd57, K. Paick57, L. Turnbull57, D. E. Wagoner57, J. Albert58, N. Danielson58, P. Elmer58, C. Lu58, V. Miftakov58, J. Olsen58, S. F. Schaffner58, A. J. S. Smith58, A. Tumanov58, E. W. Varnes58, F. Bellini59, G. Cavoto58,59, D. del Re59, R. Faccini14,59, F. Ferrarotto59, F. Ferroni59, E. Leonardi59, M. A. Mazzoni59, S. Morganti59, G. Piredda59, F. Safai Tehrani59, M. Serra59, C. Voena59, S. Christ60, G. Wagner60, R. Waldi60, T. Adye61, N. De Groot61, B. Franek61, N. I. Geddes61, G. P. Gopal61, S. M. Xella61, R. Aleksan62, S. Emery62, A. Gaidot62, P.-F. Giraud62, G. Hamel de Monchenault62, W. Kozanecki62, M. Langer62, G. W. London62, B. Mayer62, G. Schott62, B. Serfass62, G. Vasseur62, Ch. Yeche62, M. Zito62, M. V. Purohit63, A. W. Weidemann63, F. X. Yumiceva63, I. Adam64, D. Aston64, N. Berger64, A. M. Boyarski64, M. R. Convery64, D. P. Coupal64, D. Dong64, J. Dorfan64, W. Dunwoodie64, R. C. Field64, T. Glanzman64, S. J. Gowdy64, E. Grauges64, T. Haas64, T. Hadig64, V. Halyo64, T. Himel64, T. Hryn’ova64, M. E. Huffer64, W. R. Innes64, C. P. Jessop64, M. H. Kelsey64, P. Kim64, M. L. Kocian64, U. Langenegger64, D. W. G. S. Leith64, S. Luitz64, V. Luth64, H. L. Lynch64, H. Marsiske64, S. Menke64, R. Messner64, D. R. Muller64, C. P. O’Grady64, V. E. Ozcan64, A. Perazzo64, M. Perl64, S. Petrak64, H. Quinn64, B. N. Ratcliff64, S. H. Robertson64, A. Roodman64, A. A. Salnikov64, T. Schietinger64, R. H. Schindler64, J. Schwiening64, G. Simi64, A. Snyder64, A. Soha64, S. M. Spanier64, J. Stelzer64, D. Su64, M. K. Sullivan64, H. A. Tanaka64, J. Va’vra64, S. R. Wagner64, M. Weaver64, A. J. R. Weinstein64, W. J. Wisniewski64, D. H. Wright64, C. C. Young64, P. R. Burchat65, C. H. Cheng65, T. I. Meyer65, C. Roat65, R. Henderson66, W. Bugg67, H. Cohn67, J. M. Izen68, I. Kitayama68, X. C. Lou68, F. Bianchi69, M. Bona69, D. Gamba69, L. Bosisio70, G. Della Ricca70, S. Dittongo70, L. Lanceri70, P. Poropat70, L. Vitale70, G. Vuagnin70, R. S. Panvini71, Sw. Banerjee72, C. M. Brown72, D. Fortin72, P. D. Jackson72, R. Kowalewski72, J. M. Roney72, H. R. Band73, S. Dasu73, M. Datta73, A. M. Eichenbaum73, H. Hu73, J. R. Johnson73, R. Liu73, F. Di Lodovico73, A. Mohapatra73, Y. Pan73, R. Prepost73, I. J. Scott73, S. J. Sekula73, J. H. von Wimmersperg-Toeller73, J. Wu73, S. L. Wu73, Z. Yu73, and H. Neal74 (BABAR Collaboration)

  • 1Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France
  • 2Università di Bari, Dipartimento di Fisica and INFN, I-70126 Bari, Italy
  • 3Institute of High Energy Physics, Beijing 100039, China
  • 4University of Bergen, Institute of Physics, N-5007 Bergen, Norway
  • 5Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720
  • 6University of Birmingham, Birmingham, B15 2TT, United Kingdom
  • 7Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany
  • 8University of Bristol, Bristol BS8 1TL, United Kingdom
  • 9University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
  • 10Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
  • 11Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia
  • 12University of California at Irvine, Irvine, California 92697
  • 13University of California at Los Angeles, Los Angeles, California 90024
  • 14University of California at San Diego, La Jolla, California 92093
  • 15University of California at Santa Barbara, Santa Barbara, California 93106
  • 16University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064
  • 17California Institute of Technology, Pasadena, California 91125
  • 18University of Cincinnati, Cincinnati, Ohio 45221
  • 19University of Colorado, Boulder, Colorado 80309
  • 20Colorado State University, Fort Collins, Colorado 80523
  • 21Technische Universität Dresden, Institut für Kern-und Teilchenphysik, D-01062 Dresden, Germany
  • 22Ecole Polytechnique, LLR, F-91128 Palaiseau, France
  • 23University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
  • 24Elon University, Elon University, North Carolina 27244-2010
  • 25Università di Ferrara, Dipartimento di Fisica and INFN, I-44100 Ferrara, Italy
  • 26Florida A&M University, Tallahassee, Florida 32307
  • 27Laboratori Nazionali di Frascati dell’INFN, I-00044 Frascati, Italy
  • 28Università di Genova, Dipartimento di Fisica and INFN, I-16146 Genova, Italy
  • 29Harvard University, Cambridge, Massachusetts 02138
  • 30University of Iowa, Iowa City, Iowa 52242
  • 31Iowa State University, Ames, Iowa 50011-3160
  • 32Laboratoire de l’Accélérateur Linéaire, F-91898 Orsay, France
  • 33Lawrence Livermore National Laboratory, Livermore, California 94550
  • 34University of Liverpool, Liverpool L69 3BX, United Kingdom
  • 35University of London, Imperial College, London, SW7 2BW, United Kingdom
  • 36Queen Mary, University of London, E1 4NS, United Kingdom
  • 37University of London, Royal Holloway and Bedford New College, Egham, Surrey TW20 0EX, United Kingdom
  • 38University of Louisville, Louisville, Kentucky 40292
  • 39University of Manchester, Manchester M13 9PL, United Kingdom
  • 40University of Maryland, College Park, Maryland 20742
  • 41University of Massachusetts, Amherst, Massachusetts 01003
  • 42Massachusetts Institute of Technology, Laboratory for Nuclear Science, Cambridge, Massachusetts 02139
  • 43McGill University, Montréal, Québec, Canada H3A 2T8
  • 44Università di Milano, Dipartimento di Fisica and INFN, I-20133 Milano, Italy
  • 45University of Mississippi, University, Mississippi 38677
  • 46Université de Montréal, Laboratoire René J. A. Lévesque, Montréal, Quábec, Canada H3C 3J7
  • 47Mount Holyoke College, South Hadley, Massachusetts 01075
  • 48Università di Napoli Federico II, Dipartimento di Scienze Fisiche and INFN, I-80126, Napoli, Italy
  • 49University of Notre Dame, Notre Dame, Indiana 46556
  • 50Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
  • 51University of Oregon, Eugene, Oregon 97403
  • 52Università di Padova, Dipartimento di Fisica and INFN, I-35131 Padova, Italy
  • 53Universités Paris VI et VII, Lab de Physique Nucléaire H. E., F-75252 Paris, France
  • 54Università di Pavia, Dipartimento di Elettronica and INFN, I-27100 Pavia, Italy
  • 55University of Pennsylvania, Philadelphia, Pennsylvania 19104
  • 56Università di Pisa, Scuola Normale Superiore and INFN, I-56010 Pisa, Italy
  • 57Prairie View A&M University, Prairie View, Texas 77446
  • 58Princeton University, Princeton, New Jersey 08544
  • 59Università di Roma La Sapienza, Dipartimento di Fisica and INFN, I-00185 Roma, Italy
  • 60Universität Rostock, D-18051 Rostock, Germany
  • 61Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
  • 62DAPNIA, Commissariat à l’Energie Atomique/Saclay, F-91191 Gif-sur-Yvette, France
  • 63University of South Carolina, Columbia, South Carolina 29208
  • 64Stanford Linear Accelerator Center, Stanford, California 94309
  • 65Stanford University, Stanford, California 94305-4060
  • 66TRIUMF, Vancouver, British Columbia, Canada V6T 2A3
  • 67University of Tennessee, Knoxville, Tennessee 37996
  • 68University of Texas at Dallas, Richardson, Texas 75083
  • 69Università di Torino, Dipartimento di Fisica Sperimentale and INFN, I-10125 Torino, Italy
  • 70Università di Trieste, Dipartimento di Fisica and INFN, I-34127 Trieste, Italy
  • 71Vanderbilt University, Nashville, Tennessee 37235
  • 72University of Victoria, Victoria, British Columbia, Canada V8W 3P6
  • 73University of Wisconsin, Madison, Wisconsin 53706
  • 74Yale University, New Haven, Connecticut 06511

  • *Also with Università di Perugia, I-06100 Perugia, Italy.

Phys. Rev. D 67, 031101(R) – Published 26 February, 2003

DOI: https://doi.org/10.1103/PhysRevD.67.031101

Abstract

A largely model-independent measurement of the inclusive electron momentum spectrum and branching fraction for semileptonic decays of B mesons is presented based on data recorded at the Υ(4S) resonance with the BABAR detector. Backgrounds from secondary charm decays are separated from prompt B decays using charge and angular correlations between the electron from one B meson and a high momentum electron tag from the second B meson. The resulting branching fraction is B(BXeν)=[10.87±0.18(stat)±0.30(syst)]%. Based on this measurement we determine the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |Vcb|.

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