Search for the rare decay B0bar --> D*0 gamma
B. Aubert, BABAR Collaboration
Abstract
We report on a search for the rare decay B0bar --> D*0 gamma, which in the standard model is dominated by W-exchange. The analysis is based on a data sample comprising 87.8 x 106 BBbar pairs collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. No significant signal is observed, and an upper limit on the branching fraction of 2.5 x 10-5 at the 90% confidence level is obtained.
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