Observation of B --> phiK and B --> phiK

• Published in: Physical review letters 2001-04, Vol.86 (17), p.3718-3721
• Main Authors: Briere, R A, Chen, G P, Ferguson, T, Vogel, H, Gritsan, A, Alexander, J P, Baker, R, Bebek, C, Berger, B E, Berkelman, K, Blanc, F, Boisvert, V, Cassel, D G, Drell, P S, Duboscq, J E, Ecklund, K M, Ehrlich, R, Gaidarev, P, Gibbons, L, Gittelman, B, Gray, S W, Hartill, D L, Heltsley, B K, Hopman, P I, Hsu, L, Jones, C D, Kandaswamy, J, Kreinick, D L, Lohner, M, Magerkurth, A, Meyer, T O, Mistry, N B, Nordberg, E, Palmer, M, Patterson, J R, Peterson, D, Riley, D, Romano, A, Thayer, J G, Urner, D, Valant-Spaight, B, Viehhauser, G, Warburton, A, Avery, P, Prescott, C, Rubiera, A I, Stoeck, H, Yelton, J, Brandenburg, G, Ershov, A, Kim, D Y, Wilson, R, Bergfeld, T, Eisenstein, B I, Ernst, J, Gladding, G E, Gollin, G D, Hans, R M, Johnson, E, Karliner, I, Marsh, M A, Plager, C, Sedlack, C, Selen, M, Thaler, J J, Williams, J, Edwards, K W, Janicek, R, Patel, P M, Sadoff, A J, Ammar, R, Bean, A, Besson, D, Zhao, X, Anderson, S, Frolov, V V, Kubota, Y, Lee, S J, O'Neill, J J, Poling, R, Riehle, T, Smith, A, Stepaniak, C J, Urheim, J, Ahmed, S, Alam, M S, Athar, S B, Jian, L, Ling, L, Saleem, M, Timm, S, Wappler, F, Anastassov, A, Eckhart, E, Gan, K K, Gwon, C, Hart, T, Honscheid, K, Hufnagel, D, Kagan, H
• Format: Article
• Language: English
• ISSN: 0031-9007

We have studied two-body charmless hadronic decays of B mesons into the final states straight phiK and phiK(*). Using 9.7 million B pairs collected with the CLEO II detector, we observe the decays B- --> phiK- and B0--> phiK(*0) with the following branching fractions: B(B--->phiK-) = (5.5(+2.1)(-1.8)+/-0.6)x10(-6) and B(B0--> phiK(*0)) = (11.5(+4.5+1.8)(-3.7-1.7))x10(-6). We also see evidence for the decays B0-->phiK0 and B---> phiK(*-). However, since the statistical significance is not overwhelming for these modes, we determine upper limits of