Department

Physics

Document Type

Article

Publication Date

3-2016

Embargo Period

7-10-2018

Abstract

We search for the rare radiative decay D 0 → γγ using a data sample with an integrated luminosity of 832 fb−1 recorded 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(D 0 → γγ) < 8.5 × 10−7 at 90% confidence level. This is the most restrictive limit on the decay channel to date.

Journal

Physical Review D

Journal ISSN

2470-0010

Volume

93

Issue

5

Digital Object Identifier (DOI)

10.1103/PhysRevD.93.051102

Comments

Preprint.

Included in

Physics Commons

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