Abstract
We report the first observation of the radiative charm decay and the first search for violation in decays , , and , using a data sample of collected with the Belle detector at the KEKB asymmetric-energy collider. The branching fraction is measured to be , where the first uncertainty is statistical and the second is systematic. The obtained asymmetries , , and are consistent with no violation. We also present an improved measurement of the branching fractions and .
- Received 4 November 2016
DOI:https://doi.org/10.1103/PhysRevLett.118.051801
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