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Search for the rare decay D-0 -> gamma gamma at Belle
Journal article   Open access  Peer reviewed

Search for the rare decay D-0 -> gamma gamma at Belle

N. K. Nisar, G. B. Mohanty, K. Trabelsi, T. Aziz, A. Abdesselam, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, …
Physical review. D, Vol.93(5)
09/03/2016

Abstract

Astronomy & Astrophysics Physical Sciences Physics Physics, Particles & Fields Science & Technology
We search for the rare radiative decay D-0 -> gamma gamma 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 -> gamma gamma) < 8.5 x 10(-7) at 90% confidence level. This is the most restrictive limit on the decay channel to date.
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https://doi.org/10.1103/PhysRevD.93.051102View
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