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Study of exclusive radiative B meson decays
Authors:Brandenburg   Ershov   Gao   Kim   Wilson   Browder   Li   Rodriguez   Yamamoto   Bergfeld   Eisenstein   Ernst   Gladding   Gollin   Hans   Johnson   Karliner   Marsh   Palmer   Plager   Sedlack   Selen   Thaler   Williams   Edwards   Janicek
Affiliation:Southern Methodist University, Dallas, Texas 75725, USA.
Abstract:We have studied exclusive, radiative B meson decays to charmless mesons in 9.7x10(6) B&Bmacr; decays accumulated with the CLEO detector. We measure B(B0-->K(*0)(892)gamma) = (4.55(+0.72)(-0. 68)+/-0.34)x10(-5) and B(B+-->K(*+)(892)gamma) = (3.76(+0.89)(-0. 83)+/-0.28)x10(-5). We have searched for CP asymmetry in B-->K(*)(892)gamma decays and measure A(CP) = +0.08+/-0.13+/-0.03. We report the first observation of B-->K(*)(2)(1430)gamma decays with a branching fraction of (1.66(+0.59)(-0.53)+/-0.13)x10(-5). No evidence for the decays B-->rhogamma and B0-->omegagamma is found and we limit B(B-->(rho/omega)gamma)/B(B-->K(*)(892)gamma)<0.32 at 90% C.L.
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