2002/07/24 by The BABAR Collaboration, B. Aubert, Aubert, B.
Medicine · Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Medical Imaging Techniques and Applications #Radiation Therapy and Dosimetry #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0207073
17 pages, 2 postscript figues, submitted to ICHEP2002
arxiv created 2002/07/24 · arxiv updated 2009/11/30
A search for the exclusive radiative decays B->rho(770) gamma and B0->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[B0->rho0 gamma]< 1.4 times 10-6, BR[B+ -> rho+ gamma] < 2.3 times 10-6 and BR[B0 -> 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.