Search For The Decay (B)Over-Bar(0) -> D*(0)Gamma M Artuso , R Ayad , C Boulahouache , K Bukin , E Dambasuren , S Karamov , S Kopp , G Majumder , Gc Moneti , R Mountain , S Schuh , T Skwarnicki , S Stone , G Viehhauser , Jc Wang , A Wolf , J Wu , Se Csorna , I Danko , Kw Mclean , S Marka , Z Xu , R Godang , K Kinoshita , Ic Lai , S Schrenk , G Bonvicini , D Cinabro , Lp Perera , Gj Zhou , G Eigen , E Lipeles , M Schmidtler , A Shapiro , Wm Sun , Aj Weinstein , F Wurthwein , De Jaffe , G Masek , Hp Paar , Em Potter , S Prell , V Sharma , Dm Asner , A Eppich , Ts Hill , Dj Lange , Rj Morrison , Ra Briere , Bh Behrens , Wt Ford , A Gritsan , J Roy , Jg Smith , Jp Alexander , R Baker , C Bebek , Be Berger , K Berkelman , F Blanc , V Boisvert , Dg Cassel , M Dickson , Ps Drell , Km Ecklund , R Ehrlich , Ad Foland , P Gaidarev , L Gibbons , B Gittelman , Sw Gray , Dl Hartill , Bk Heltsley , Pi Hopman , Cd Jones , Dl Kreinick , M Lohner , A Magerkurth , To Meyer , Nb Mistry , E Nordberg , Jr Patterson , D Peterson , D Riley , Jg Thayer , Pg Thies , B Valant-Spaight , A Warburton , P Avery , C Prescott , Ai Rubiera , J Yelton , J Zheng , G Brandenburg , A Ershov , Ys Gao , Dyj Kim , R Wilson , Te Browder , Y Li , Jl Rodriguez , H Yamamoto , T Bergfeld , Bi Eisenstein , J Ernst , Ge Gladding , Gd Gollin , Rm Hans , E Johnson , I Karliner , Ma Marsh , M Palmer , C Plager , C Sedlack , M Selen , Jj Thaler , J Williams , Kw Edwards , R Janicek , Pm Patel , Aj Sadoff , R Ammar , A Bean , D Besson , R Davis , N Kwak , X Zhao , S Anderson , Vv Frolov , Y Kubota , Sj Lee , R Mahapatra , Jj O'Neill , R Poling , T Riehle , A Smith , J Urheim , S Ahmed , Ms Alam , Sb Athar , L Jian , L Ling , Ah Mahmood , M Saleem , S Timm , F Wappler , A Anastassov , Je Duboscq , Kk Gan , C Gwon , T Hart , K Honscheid , D Hufnagel , H Kagan , R Kass , Tk Pedlar , H Schwarthoff , Jb Thayer , E Von Toerne , Mm Zoeller , Sj Richichi , H Severini , P Skubic , A Undrus , S Chen , J Fast , Jw Hinson , J Lee , N Menon , Dh Miller , Ei Shibata , Ipj Shipsey , V Pavlunin , D Cronin-Hennessy , Y Kwon , Al Lyon , Eh Thorndike , Cp Jessop , H Marsiske , Ml Perl , V Savinov , D Ugolini , X Zhou , Te Coan , V Fadeyev , Y Maravin , I Narsky , R Stroynowski , J Ye , T Wlodek PHYSICAL REVIEW LETTERS（2000）
摘要
We report results of a search for the rare radiative decay (B) over bar(0) --> D*(0)gamma. Using 9.66 x 10(6) meson pairs collected with the CLEO detector at the Cornell Electron Storage Ring, we set an upper limit on the branching ratio for this decay of 5.0 x 10(-5) at 90% C.L. This provides evidence that the anomalous enhancement is absent in W-exchange processes and that weak radiative B decays are dominated by the short-distance b --> s gamma mechanism in the standard model.
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