Journal
PHYSICAL REVIEW D
Volume 93, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.93.051102
Keywords
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Funding
- MEXT (Japan)
- JSPS (Japan)
- Nagoya's TLPRC (Japan)
- ARC (Australia)
- FWF (Austria)
- NSFC (China)
- CCEPP (China)
- MSMT (Czechia)
- CZF (Germany)
- DFG (Germany)
- VS (Germany)
- DST (India)
- INFN (Italy)
- MOE (Korea)
- MSIP (Korea)
- NRF (Korea)
- BK21Plus (Korea)
- WCU (Korea)
- RSRI (Korea)
- MNiSW (Poland)
- NCN (Poland)
- MES (Russia)
- RFAAE (Russia)
- ARRS (Slovenia)
- IKERBASQUE (Spain)
- UPV/EHU (Spain)
- SNSF (Switzerland)
- NSC (Taiwan)
- MOE (Taiwan)
- DOE (USA)
- NSF (USA)
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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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