Determination of vertical bar V-ub vertical bar 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, JP Lucotte, A Merle, E Minard, MN Nief, JY Pietrzyk, B Alemany, R Boix, G Casado, MP Chmeissani, M Crespo, JM Delfino, M Fernandez, E Fernandez-Bosman, M Garrido, L Grauges, E Juste, A Martinez, M Merino, G Miquel, R Mir, LM Park, IC Pascual, A Riu, I Sanchez, F Colaleo, A 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 Lin, J 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, RW Frank, M Hagelberg, R Hansen, JB Harvey, J Janot, P Jost, B Lehraus, I Mato, P Minten, A Moneta, L Pacheco, A Ranjard, F Rolandi, L Rousseau, D Schlatter, D Schmitt, M Schneider, O Tejessy, W Teubert, F Tomalin, IR Wachsmuth, H Ajaltouni, Z Badaud, F Chazelle, G Deschamps, O Falvard, A Ferdi, C Gay, F Guicheney, C Henrard, P Jousset, J Michel, B Monteil, S Montret, JC Pallin, D Perret, P Podlyski, F Proriol, J Rosnet, P Hansen, JD Hansen, JR Hansen, PH Nilsson, BS Rensch, B Waananen, A Daskalakis, G Kyriakis, A Markou, C Simopoulou, E Siotis, I Vayaki, A Blondel, A Bonneaud, G Brient, JC Bourdon, P Rouge, A Rumpf, M Valassi, A Verderi, M Videau, H Focardi, E Parrini, G Zachariadou, K Corden, M Georgiopoulos, C Jaffe, DE Antonelli, A Bencivenni, G Bologna, G Bossi, F Campana, P Capon, G Cerutti, F Chiarella, V Felici, G Laurelli, P Mannocchi, G Murtas, F Murtas, GP Passalacqua, L Pepe-Altarelli, M Curtis, L Halley, AW Lynch, JG Negus, P O'Shea, V Raine, C Scarr, JM Smith, K Teixeira-Dias, P Thompson, AS Thomson, E Buchmuller, O Dhamotharan, S Geweniger, C Graefe, G Hanke, P Hansper, G Hepp, V Kluge, EE Putzer, A Sommer, J Tittel, K Werner, S Wunsch, M Beuselinck, R Binnie, DM Cameron, M Dornan, PJ Girone, M Goodsir, S Martin, EB Marinelli, N Moutoussi, A Nash, J Sedgbeer, JK Spagnolo, P Williams, MD Ghete, VM Girtler, P Kneringer, E Kuhn, D Rudolph, G Bowdery, CK Buck, PG Colrain, P Crawford, G Finch, AJ Foster, F Hughes, G Jones, RWL Robertson, NA Williams, MI Giehl, I Hoffmann, C Jakobs, K Kleinknecht, K Quast, G Renk, B Rohne, E Sander, HG van Gemmeren, P Zeitnitz, C Aubert, JJ 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, K Aleppo, M Antonelli, M Ragusa, F Berlich, R Blum, W Buscher, V Dietl, H Ganis, G Kroha, H Lutjens, G Mannert, C Manner, W Moser, HG 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, JF Heusse, P Hocker, A Jacholkowska, A Kim, DW Le Diberder, F Lefrancois, J Lutz, AM Schune, MH Tournefier, E Veillet, JJ Videau, I Zerwas, D Azzurri, P Bagliesi, G Batignani, G Bettarini, S Boccali, T Bozzi, C Calderini, G Carpinelli, M Ciocci, MA Dell'Orso, R Fantechi, R Ferrante, I Foa, L Forti, F Giassi, A Giorgi, MA Gregorio, A Ligabue, F Lusiani, A Marrocchesi, PS Messineo, A Palla, F Rizzo, G Sanguinetti, G Sciaba, A Sguazzoni, G Tenchini, R Tonelli, G Vannini, C Venturi, A Verdini, PG Blair, GA Bryant, LM Chambers, JT Green, MG Medcalf, T Perrodo, P Strong, JA von Wimmersperg-Toeller, JH Botterill, DR Clifft, RW Edgecock, TR Haywood, S Norton, PR Thompson, JC Wright, AE Bloch-Devaux, B Colas, P Emery, S Kozanecki, W Lancon, E Lemaire, MC Locci, E Perez, P Rander, J Renardy, JF Roussarie, A Schuller, JP Schwindling, J Trabelsi, A Vallage, B Black, SN Dann, JH Johnson, RP Kim, HY Konstantinidis, N Litke, AM McNeil, MA Taylor, G Booth, CN Cartwright, S Combley, F Kelly, MS Lehto, M Thompson, LF Affholderbach, K Bohrer, A Brandt, S Cowan, G Grupen, C Saraiva, P Smolik, L Stephan, F Giannini, G Gobbo, B Musolino, G Rothberg, J Wasserbaech, S Armstrong, SR Betteridge, AP Charles, E Elmer, P Ferguson, DPS Gao, Y Gonzalez, S Greening, TC Hayes, OJ Hu, H Jin, S McNamara, PA Nachtman, JM Nielsen, J Orejudos, W Pan, YB Saadi, Y Scott, IJ Walsh, J Wu, SL Wu, X Zobernig, G
Citation
R. Barate et al., Determination of vertical bar V-ub vertical bar from the measurement of the inclusive charmless semileptonic branching ratio of b hadrons, EUR PHY J C, 6(4), 1999, pp. 555-574
Citations number
48
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL C
ISSN journal
1434-6044 → ACNP
Volume
6
Issue
4
Year of publication
1999
Pages
555 - 574
Database
ISI
SICI code
1434-6044(199901)6:4<555:DOVBVV>2.0.ZU;2-1
Abstract
From a study of the kinematic properties of the final state produced in the semileptonic decays b --> Xlv(e), the inclusive charmless semileptonic bra nching ratio of b hadrons is measured. With a sample of 3.6 million hadroni c Z decays recorded between 1992 and 1995 with the ALEPH detector at LEP, t he value Br(b --> X(u)lv(e)) is determined to be (1.73 +/- 0.55(stat) +/- 0 .55(syst)) x 10(-3), where X-u represents any charmless hadronic state and b is a mixture of b hadrons weighted by; their production rates. This measu rement yields the result /V<INF>ub</INF>/<SUP>2</SUP> = (18.68 +/- 5.94<INF>stat</INF> +/- 5.94<INF> syst</INF> +/- 1.45<INF>HQE</INF>) x 10<SUP>-6 </SUP>where the last error comes from the conversion of the branching ratio to the CKM matrix element squared.