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Search for the rare decay $D^0\to\gamma\gamma$ at Belle

Submit Time: 2016-09-12
Author: Nisar, N. K. and others 1 ;
Institute: 1.Belle Collaboration;


We search for the rare radiative decay?D0→γγ?using a data sample with an integrated luminosity of?832fb?1recorded by the Belle detector at the KEKB?e+e??asymmetric-energy collider. We find no statistically significant signal and set an upper limit on the branching fraction of?B(D0→γγ)<8.5×10?7?at?90%?confidence level. This is the most restrictive limit on the decay channel to date.
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Keywords: Belle; ;
Recommended references: Nisar, N. K. and others.(2016).Search for the rare decay $D^0\to\gamma\gamma$ at Belle.[ChinaXiv:201609.00813] (Click&Copy)
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[V1] 2016-09-12 09:01:30 chinaXiv:201609.00813V1 Download
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