Search for the Exclusive Radiative Decays B -> rho gamma and B -> omega gamma

Details Search for the Exclusive Radiative Decays B -> rho gamma and B -> omega gamma Search for the Exclusive Radiative Decays B -> rho gamma and B -> omega gamma

2002-07-24

arxiv.org/abs/hep-ex/0207073v1

Physics

High Energy Physics

High Energy Physics - Experiment

17 pages, 2 postscript figues, submitted to ICHEP2002

Scientific paper

A search for the exclusive radiative decays B->rho(770) gamma and B^0->omega(782) gamma is performed on a sample of 84 million BB-bar events collected by the BABAR detector at the PEP-II asymmetric e^+e^- collider. No significant signal is seen in any of the channels. We set preliminary upper limits of BR[B^0->rho^0 gamma]< 1.4 times 10^{-6}, BR[B^+ -> rho^+ gamma] < 2.3 times 10^{-6} and BR[B^0 -> omega gamma]< 1.2 times 10^{-6} at 90% Confidence Level. Combining these into a single limit on the generic process B-> rho gamma, we find the preliminary limit BR[B -> rho gamma]<1.9 times 10^{-6}, corresponding to a limit of BR[B -> rho gamma]/BR[B-> K* gamma] < 0.047 at 90% Confidence Level.

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