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Determination of $\mid V_{ub} \mid$ from the Measurement of the Inclusive Charmless Semileptonic Branching Ratio of b hadrons
Authors :
Barate, R. Buskulic, D. Decamp, D. Ghez, P. Goy, C. Lees, J P. Lucotte, A. Martin, F. Merle, E. Minard, M N. Nief, J Y. Pietrzyk, B. Alemany, R. Boix, G. Casado, M P. Chmeissani, M. Crespo, J M. Delfino, M. Fernandez, E. Fernandez-Bosman, M. Garrido, L. Graughs, E. Juste, A. Martmnez, M. Merino, G. Mir, L M. Park, I C. Pascual, A. Riu, I. Sanchez, F. Creanza, D. De Palma, M. Gelao, G. Iaselli, G. Maggi, G. Maggi, M. Nuzzo, S. Ranieri, A. Raso, G. Ruggieri, F. Selvaggi, G. Silvestris, L. Tempesta, P. Tricomi, A. Zito, G. Huang, X. Ouyang, Q. Wang, T. Xie, Y. Xu, R. Xue, S. Zhang, J. Zhang, L. Zhao, W. Abbaneo, D. Becker, U. Bright-Thomas, P. Casper, D. Cattaneo, M. Ciulli, V. Dissertori, G. Drevermann, H. Forty, R W. Frank, M. Hagelberg, R. Hansen, J B. Harvey, J. Janot, P. Jost, B. Lehraus, I. Mato, P. Minten, A. Moneta, L. Pacheco, A. Rolandi, L. Rousseau, D. Schlatter, D. Schmitt, M. Schneider, O. Tejessy, W. Teubert, F. Tomalin, I R. Wachsmuth, H. Ajaltouni, Ziad Badaud, F. Chazelle, G. Deschamps, O. Falvard, Alain Ferdi, C. Gay, Pascal Guicheney, C. Henrard, Pierre Jousset, J. Michel, B. Monteil, S. Montret, Jean-Claude Pallin, D. Perret, Pascal Podlyski, F. Proriol, Joseph Rosnet, P. Hansen, J D. Hansen, J R. Hansen, P H. Nilsson, B S. Rensch, B. Wddndnen, A. Daskalakis, G. Kyriakis, A. Markou, C. Simopoulou, E. Siotis, I. Vayaki, A. Blondel, A. Bonneaud, G. Brient, J C. Bourdon, P. Rougi, A. Rumpf, M. Tanaka, R. Verderi, M. Videau, H. Focardi, E. Parrini, G. Zachariadou, K. Corden, M. Georgiopoulos, C. Jaffe, D E. Antonelli, A. Bencivenni, G. Bossi, F. Campana, P. Capon, G. Cerutti, F. Chiarella, V. Felici, G. Laurelli, P. Mannocchi, G. Murtas, F. Murtas, G P. Passalacqua, L. Pepi-Altarelli, M. Curtis, L. Halley, A W. LynchJ, G. Negus, P. O'Shea, V. Raine, C. Scarr, J M. Smith, K. Teixeira-Dias, P. Thompson, A S. Thomson, E. Dhamotharan, S. Geweniger, C. Graefe, G. Hanke, P. Hansper, G. Hepp, V. Kluge, E E. Putzer, A. Sommer, J. Tittel, K. Werner, S. Wunsch, M. Beuselinck, R. Binnie, D M. Cameron, W. Dornan, P J. Girone, M. Goodsir, S. Martin, E B. Marinelli, N. Moutoussi, A. Nash, J. Sedgbeer, J K. Spagnolo, P. Williams, M D. Ghete, V M. Girtler, P. Kneringer, E. Kuhn, D. Rudolph, G. Bowdery, C K. BuckP, G. Colrain, P. Crawford, G. Finch, A J. Foster, F. Hughes, G. Jones, R W L. Robertson, N A. Williams, M I. Giehl, I. Hoffmann, C. Jakobs, K. Kleinknecht, K. Quast, G. Renk, B. Rohne, E. SanderH, G. Van Gemmeren, P. Zeitnitz, C. Aubert, J.J. Benchouk, C. Bonissent, A. Bujosa, G. Carr, J. Coyle, P. Etienne, F. Leroy, O. Motsch, F. Payre, P. Talby, M. Sadouki, A. Thulasidas, M. Trabelsi, Karim Aleppo, M. Antonelli, M. Ragusa, F. Berlich, R. Dietl, H. Ganis, G. Kroha, H. Mdnner, W. Moser, H G. Schael, S. Settles, R. Seywerd, H. Stenzel, H. Wiedenmann, W. Wolf, G. Boucrot, J. Callot, O. Chen, S. Cordier, A. Davier, M. Duflot, L. Grivaz, J F. Heusse, P. Hvcker, A. Jacholkowska, A. Kim, D W. Le Diberder, F. Lefrangois, J. Lutz, A M. Schune, M H. Tournefier, E. Veillet, J J. Videau, I. Zerwas, D. Azzurri, P. Bagliesi, G. Batignani, G. Bettarini, S. Boccali, T. Bozzi, C. Calderini, G. Carpinelli, M. Ciocci, M A. Dell'Orso, R. Fantechi, R. Ferrante, I. Forti, F. Giorgi, M A. Gregorio, A. Ligabue, F. Lusiani, A. MarrocchesiP, S. Messineo, A. Palla, F. Rizzo, G. Sanguinetti, G. Sguazzoni, G. Tenchini, R. Tonelli, G. Vannini, C. Venturi, A. Verdini, P G. Blair, G A. Bryant, L M. Chambers, J T. Green, M G. Medcalf, T. Perrodo, P. Strong, J A. Von Wimmersperg-Toeller, J H. Botterill, D R. Clifft, R W. Edgecock, T R. Haywood, S. Norton, P R. Thompson, J C. Wright, A E. Bloch-Devaux, B. Colas, P. Emery, S. Kozanecki, W. Langon, E. Lemaire, M C. Locci, E. Pirez, P. Renardy, J F. Roussarie, A. Schuller, J P. Schwindling, J. Trabelsi, A. Vallage, B. Black, S N. Dann, J H. Johnson, R P. KimH, Y. Konstantinidis, N. Litke, A M. McNeil, M A. Taylor, G. Booth, CN. Cartwright, S L. Combley, F. Kelly, M S. Lehto, M H. Thompson, L F. Affholderbach, K. Bvhrer, A. Brandt, S. Cowan, G D. Grupen, C. Saraiva, P. Smolik, L. Stephan, F. Giannini, G. Musolino, G. Rothberg, J E. Wasserbaech, S. Armstrong, S R. Betteridge, A P. Charles, E. Elmer, P. Ferguson, D P S. Gao, Y. Gonzalez, S. Greening, T C. Hayes, O J. Hu, H. Jin, S. McNamara, PA. Nachtman, J M. Nielsen, J. Orejudos, W. Pan, Y B. Saadi, Y. Scott, I J. Walsh, J. Wu, S L. Wu, X. Zobernig, G. Laboratoire d'Annecy de Physique des Particules (LAPP) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Leprince-Ringuet (LLR) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS) Centre de Physique des Particules de Marseille (CPPM) Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de l'Accélérateur Linéaire (LAL) Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) ALEPH Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) Kerec, Hélène
Source :
European Physical Journal C: Particles and Fields, European Physical Journal C: Particles and Fields, 1999, 6, pp.555-574, European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 1999, 6, pp.555-574
Publication Year :
1999
Publisher :
HAL CCSD, 1999.
Abstract
From a study of the kinematic properties of the final state produced in the semileptonic decays b-->X l nu, the inclusive charmless semileptonic branching ratio of b hadrons is measured. With a sam ple of 3.6 million hadronic Z decays recorded between 1992 and 1995 with the ALEPH detector at LEP, the value Br(b-->X_u l nu) is determined to be (1.73 +- 0.55_stat +- 0.55_syst)*10^{-3}, where X_u represents any charmless hadronic state and b is a mixture of b hadrons weighted by their production rates. This measurement yields the result |V_ub|^2= (18.68 +- 5.94_stat +- 5.94_syst +- 1 .45_HQE)*10^{-6}, where the last error comes from the conversion of the branching ratio to the CKM matrix element squared.
Details
Language :
English
ISSN :
14346044 and 14346052
Database :
OpenAIRE
Journal :
European Physical Journal C: Particles and Fields, European Physical Journal C: Particles and Fields, 1999, 6, pp.555-574, European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 1999, 6, pp.555-574
Accession number :
edsair.dedup.wf.001..d935dc6606f546e482df26c72d28e029