Measurement of B ->rho l nu decay and vertical bar V-ub vertical bar - art. no. 052001

Authors
Behrens, BH Ford, WT Gritsan, A Krieg, H Roy, J Smith, JG Alexander, JP Baker, R Bebek, C Berger, BE Berkelman, K Boisvert, V Cassel, DG Crowcroft, DS Dickson, M von Dombrowski, S Drell, PS Ecklund, KM Ehrlich, R Foland, AD Gaidarev, P Gibbons, L Gittelman, B Gray, SW Hartill, DL Heltsley, BK Hopman, PI Kreinick, DL Lee, T Liu, Y Meyer, TO Mistry, NB Ng, CR Nordberg, E Ogg, M Patterson, JR Peterson, D Riley, D Thayer, JG Thies, PG Valant-Spaight, B Warburton, A Ward, C Athanas, M Avery, P Jones, CD Lohner, M Prescott, C Rubiera, AI Yelton, J Zheng, J Brandenburg, G Briere, RA Ershov, A Gao, YS Kim, DYJ Wilson, R Browder, TE Li, Y Rodriguez, JL Yamamoto, H Bergfeld, T Eisenstein, BI Ernst, J Gladding, GE Gollin, GD Hans, RM Johnson, E Karliner, I Marsh, MA Palmer, M Plager, C Sedlack, C Selen, M Thaler, JJ Williams, J Edwards, KW Bellerive, A Janicek, R Patel, PM Sadoff, AJ Ammar, R Baringer, P Bean, A Besson, D Coppage, D Davis, R Kotov, S Kravchenko, I Kwak, N Zhao, X Zhou, L Anderson, S Frolov, VV Kubota, Y Lee, SJ Mahapatra, R O'Neill, JJ Poling, R Riehle, T Smith, A Alam, MS Athar, SB Mahmood, AH Timm, S Wappler, F Anastassov, A Duboscq, JE Gan, KK Gwon, C Hart, T Honscheid, K Kagan, H Kass, R Lorenc, J Schwarthoff, H von Toerne, E Zoeller, MM Richichi, SJ Severini, H Skubic, P Undrus, A Bishai, M Chen, S Fast, J Hinson, JW Lee, J Menon, N Miller, DH Shibata, EI Shipsey, IPJ Glenn, S Kwon, Y Lyon, AL Thorndike, EH Jessop, CP Lingel, K Marsiske, H Perl, ML Savinov, V Ugolini, D Zhou, X Coan, TE Fadeyev, V Korolkov, I Maravin, Y Narsky, I Stroynowski, R Ye, J Wlodek, T Artuso, M Ayad, R Dambasuren, E Kopp, S Majumder, G Moneti, GC Mountain, R Schuh, S Skwarnicki, T Stone, S Titov, A Viehhauser, G Wang, JC Csorna, SE McLean, KW Marka, S Xu, Z Godang, R Kinoshita, K Lai, IC Pomianowski, P Schrenk, S Bonvicini, G Cinabro, D Greene, R Perera, LP Zhou, GJ Chan, S Eigen, G Lipeles, E Schmidtler, M Shapiro, A Sun, WM Urheim, J Weinstein, AJ Wurthwein, F Jaffe, DE Masek, G Paar, HP Potter, EM Prell, S Sharma, V Asner, DM Eppich, A Gronberg, J Hill, TS Lange, DJ Morrison, RJ Nelson, HN Nelson, TK Richman, JD Roberts, D
Citation
Bh. Behrens et al., Measurement of B ->rho l nu decay and vertical bar V-ub vertical bar - art. no. 052001, PHYS REV D, 6105(5), 2000, pp. 2001
Citations number
34
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6105
Issue
5
Year of publication
2000
Database
ISI
SICI code
0556-2821(20000301)6105:5<2001:MOB-LN>2.0.ZU;2-H
Abstract
Using a sample of 3.3 X 10(6) Y (4S) --> B (B) over bar events collected wi th the CLEO II detector at the Cornell Electron Storage Ring (CESR), we mea sure B(B --> rho l nu), \V-ub\, and the partial rate (Delta Gamma) in three bins of q(2) = (p(B) - p(rho))(2). We find B(B-0 --> rho (-)l(+) nu) = (2. 69+/-0.4(-0.40)(+0.35)+/-0.50) X 10(-4), \V-ub\ = (3 23+/-0.24(-0.26)(+0.23 )+/-0.58) X 10(-3), Delta Gamma(0 < q(2) < 7 GeV2/c(4)) = (7.6+/-3.0(-1.2)( +0.9)+/-3.0) X 10(-2) ns(-1), Delta Gamma(7 < q(2) < 14 GeV2/c(4)) = (4.8+/ -2.9(-0.8)(+0.7)+/-0.7) X 10(-2) ns(-1), and Delta Gamma(14 < q(2) < 21 GeV 2/c(4)) = (7.1+/-2.1(-1.1)(+0.9)+/-0.6) X 10(-2) ns(-1). Here, l = e or mu, but not both, and the errors are statistical, systematic, and theoretical. The method is sensitive primarily to B --> rho l nu decays with leptons in the energy range above 2.3 GeV. Averaging with the previously published CL EO results for B --> rho l nu, we obtain B(B-0 --> rho(-)l(+) nu) = (2.57+/ -0.29(-0.46)(+0.33)+/-0.41) X 10(-4) and \V-ub\ = (3.25+/-0.14(-0.29)(+0.21 )+/-0.55) X 10(-3).