Observation of B ->phi K and B ->phi K

Authors
Brier, RA Chen, GP Ferguson, T Vogel, H Gritsan, A Alexander, JP Baker, R Bebek, C Berger, BE Berkelman, K Blanc, F Boisvert, V Cassel, DG Drell, PS Duboscq, JE Ecklund, KM Ehrlich, R Gaidarev, P Gibbons, L Gittelman, B Gray, SW Hartill, DL Heltsley, BK Hopman, PI Hsu, L Jones, CD Kandaswamy, J Kreinick, DL Lohner, M Magerkurth, A Meyer, TO Mistry, NB Nordberg, E Palmer, M Patterson, JR Peterson, D Riley, D Romano, A Thayer, JG Urner, D Valant-Spaight, B Viehhauser, G Warburton, A Avery, P Prescott, C Rubiera, AI Stoeck, H Yelton, J Brandenburg, G Ershov, A Kim, DYJ Wilson, R Bergfeld, T Eisenstein, BI Ernst, J Gladding, GE Gollin, GD Hans, RM Johnson, E Karliner, I Marsh, MA Plager, C Sedlack, C Selen, M Thaler, JJ Williams, J Edwards, KW Janicek, R Patel, PM Sadoff, AJ Ammar, R Bean, A Besson, D Zhao, X Anderson, S Frolov, VV Kubota, Y Lee, SJ O'Neill, JJ Poling, R Riehle, T Smith, A Stepaniak, CJ Urheim, J Ahmed, S Alam, MS Athar, SB Jian, L Ling, L Saleem, M Timm, S Wappler, F Anastassov, A Eckhart, E Gan, KK Gwon, C Hart, T Honscheid, K Hufnagel, D Kagan, H Kass, R Pedlar, TK Schwarthoff, H Thayer, JB von Toerne, E Zoeller, MM Richichi, SJ Severini, H Skubic, P Undrus, A Savinov, V Chen, S Fast, J Hinson, JW Lee, J Miller, DH Shibata, EI Shipsey, IPJ Pavlunin, V Cronin-Hennessy, D Lyon, AL Thorndike, EH Coan, TE Fadeyev, V Gao, YS Maravin, Y Narsky, I Stroynowski, R Ye, J Wlodek, T Artuso, M Boulahouache, C Bukin, K Dambasuren, E Majumder, G Mountain, R Schuh, S Skwarnicki, T Stone, S Wang, JC Wolf, A Wu, J Kopp, S Kostin, M Mahmood, AH Csorna, SE Danko, I McLean, KW Xu, Z Godang, R Bonvicini, G Cinabro, D Dubrovin, M McGee, S Zhou, GJ Bornheim, A Lipeles, E Pappas, SP Schmidtler, M Shapiro, A Sun, WM Weinstein, AJ Jaffe, DE Mahapatra, R Masek, G Paar, HP Asner, DM Eppich, A Hill, TS Morrison, RJ
Citation
Ra. Brier et al., Observation of B ->phi K and B ->phi K, PHYS REV L, 86(17), 2001, pp. 3718-3721
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
86
Issue
17
Year of publication
2001
Pages
3718 - 3721
Database
ISI
SICI code
0031-9007(20010423)86:17<3718:OOB-KA>2.0.ZU;2-L
Abstract
We have studied two-body charmless hadronic decays of R mesons into the fin al states phiK and phiK(*). Using 9.7 million B (B) over bar pairs collecte d with the CLEO II detector, we observe the decays B- --> phiK(-) and B-0 - -> phiK(*0) with the following branching fractions: B(B- --> phiK(-)) = (5. 5(-1.8)(+2.1) +/- 0.6) x 10(-6) and B(B-0 --> phiK(*0)) = (11.5(-3.7-1.7)(4.5+1.8)) x 10(-6). We also see evidence for the decays B-0 --> phiK(0) and B- --> phiK(*-). However, since the statistical significance is not overwh elming for these modes, we determine upper limits of < 12.3 x 10(-6) and < 22.5 x 10(-6) (90% confidence level), respectively.