| Literature DB >> 11736566 |
S Chen1, J W Hinson, J Lee, D H Miller, V Pavlunin, E I Shibata, I P Shipsey, D Cronin-Hennessy, A L Lyon, E H Thorndike, T E Coan, V Fadeyev, Y S Gao, Y Maravin, I Narsky, R Stroynowski, J Ye, T Wlodek, M Artuso, K Benslama, C Boulahouache, K Bukin, E Dambasuren, G Majumder, R Mountain, T Skwarnicki, S Stone, J C Wang, A Wolf, S Kopp, M Kostin, A H Mahmood, S E Csorna, I Danko, K W McLean, Z Xu, R Godang, G Bonvicini, D Cinabro, M Dubrovin, S McGee, G J Zhou, A Bornheim, E Lipeles, S P Pappas, A Shapiro, W M Sun, A J Weinstein, D E Jaffe, R Mahapatra, G Masek, H P Paar, D M Asner, A Eppich, T S Hill, R J Morrison, R A Briere, G P Chen, T Ferguson, H Vogel, J P Alexander, C Bebek, B E Berger, K Berkelman, F Blanc, V Boisvert, D G Cassel, P S Drell, J E Duboscq, K M Ecklund, R Ehrlich, P Gaidarev, L Gibbons, B Gittelman, S W Gray, D L Hartill, B K Heltsley, L Hsu, C D Jones, J Kandaswamy, D L Kreinick, M Lohner, A Magerkurth, T O Meyer, N B Mistry, E Nordberg, M Palmer, J R Patterson, D Peterson, D Riley, A Romano, H Schwarthoff, J G Thayer, D Urner, B Valant-Spaight, G Viehhauser, A Warburton, P Avery, C Prescott, A I Rubiera, H Stoeck, J Yelton, G Brandenburg, A Ershov, D Y Kim, R Wilson, T Bergfeld, B I Eisenstein, J Ernst, G E Gladding, G D Gollin, R M Hans, E Johnson, I Karliner, M A Marsh, C Plager, C Sedlack, M Selen, J J Thaler, J Williams, K W Edwards, A J Sadoff, R Ammar, A Bean, D Besson, X Zhao, S Anderson, V V Frolov, Y Kubota, S J Lee, R Poling, A Smith, C J Stepaniak, J Urheim, S Ahmed, M S Alam, S B Athar, L Jian, L Ling, M Saleem, S Timm, F Wappler, A Anastassov, E Eckhart, K K Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, T K Pedlar, J B Thayer, E von Toerne, M M Zoeller, S J Richichi, H Severini, P Skubic, A Undrus, V Savinov.
Abstract
We have measured the branching fraction and photon energy spectrum for the radiative penguin process b-->s gamma. We find Beta(b-->s gamma) = (3.21+/-0.43+/-0.27(+0.18)(-0.10))x10(-4), where the errors are statistical, systematic, and from theory corrections. We obtain first and second moments of the photon energy spectrum above 2.0 GeV, <E( gamma)> = 2.346+/-0.032+/-0.011 GeV, and <E(2)(gamma)>-<E(gamma)>(2) = 0.0226+/-0.0066+/-0.0020 GeV(2), where the errors are statistical and systematic. From the first moment, we obtain (in the modified minimal subtraction renormalization scheme, to order 1/M(3)(B) and beta(0)alpha(2)(s)) the heavy quark effective theory parameter Lambda = 0.35+/-0.08+/-0.10 GeV.Year: 2001 PMID： 11736566 DOI： 10.1103/PhysRevLett.87.251807
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161