Bounds on the CP asymmetry in b -> s gamma decays
Abstract
We have measured the CP asymmetry A(CP) equivalent to [Gamma (b --> sy) - Gamma((b) over bar --> ($) over bar gamma)]/[Gamma (b --> s gamma) + Gamma((b) over bar --> (s) over bar gamma)] to be A(CP) = (-0.079 +/- 0.108 +/- 0.022)(1.0 +/- 0.030), implying that, at 90% confidence level, A(CP) lies between -0.27 and +/- 0.10. These limits rule out some extreme non-standard-model predictions, but are consistent with most, as well as with the standard model.
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Citation
Coan, TE; Fadeyev, V; Maravin, Y; Narsky, I; Stroynowski, R; Ye, J; Wlodek, T; Artuso, M; Ayad, R; Boulahsuache, C; Bukin, K; Dambasuren, E; Karamov, S; Majumder, G; Moneti, GC; Mountain, R; Schuh, S; Skwarnicki, T; Stone, S; Viehhauser, G; Wang, JC; Wolf, A; Wu, J; Kopp, S; Mahmood, AH; Csorna, SE; Danko, I; McLean, KW; Xu, Z; Godang, R; Bonvicini, G; Cinabro, D; Dubrovin, M; McGee, S; Zhou, GJ; Lipeles, E; Pappas, SP; Schmidtler, M; Shapiro, A; Sun, WM; Weinstein, AJ; Wurthwein, F; Jaffe, DE; Masek, G; Paar, HP; Potter, EM; Prell, S; Asner, DM; Eppich, A; Hill, TS; Morrison, RJ; Briere, RA; Chen, GP; Ford, WT; Gritsan, A; Roy, J; Smith, JG; Alexander, JP; Baker, R; Bebek, C; Berger, BE; Berkelman, K; Blanc, F; Boisvert, V; Cassel, DG; Drell, PS; Ecklund, KM; Ehrlich, R; Foland, AD; 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; Patterson, JR; Peterson, D; Riley, D; Romano, A; Thayer, JG; Urner, D; Valant-Spaight, B; Warburton, A; Avery, P; Prescott, C; Rubiera, AI; Stoeck, H; Yelton, J; Brandenburg, G; Ershov, A; Gao, YS; Kim, DYJ; Wilson, R; Bergfeld, T; Eisenstein, BI; Ernst, J; Gladding, GE; Gollin, GD; Hans, RM; Johnson, E; Karliner, I; Marsh, MA; Palmer, T; 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; Mahapatra, R; 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; Duboscq, JE; 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; Chen, S; Fast, J; Hinson, JW; Lee, J; Miller, DH; Shibata, EI; Shipsey, IPJ; Pavlunin, V; Cronin-Hennessy, D; Lyon, AL; Park, W; Thorndike, EH; Jessop, CP; Savinov, V. Bounds on the CP asymmetry in b -> s gamma decays. PHYSICAL REVIEW LETTERS. June 2001. 86(25) : 5661-5665
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