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arXiv · hep-ex/0507036

Search for the decay B0 to gamma gamma

The Belle Collaboration·S. Villa
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Abstract

The rare decay B0 -> gamma gamma is searched for in 104 fb^-1 of data, corresponding to 111 x 10^6 BBar pairs, collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No evidence for the signal is found, and an upper limit of 6.2 x 10^-7 at 90% confidence level is set for the corresponding branching fraction.

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The Belle Collaboration, S. Villa. 2006-03-24. Search for the decay B0 to gamma gamma. https://doi.org/10.1103/physrevd.73.051107

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