Search for the radiative leptonic decay D+ →γe+νe


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Ablikim M., Achasov M., Ahmed S., Ai X., Albayrak O., Albrecht M., ...Daha Fazla

Physical Review D, cilt.95, sa.7, 2017 (SCI-Expanded) identifier identifier

Özet

Using an electron-positron collision data sample of 2.93 fb-1 collected at a center-of-mass energy of s=3.773 GeV with the BESIII detector, we present the first search for the radiative leptonic decay D+→γe+νe. The analysis is performed with a double-tag method. We do not observe a significant D+→γe+νe signal, and obtain an upper limit on the branching fraction of D+→γe+νe decay with the energy of radiative photon larger than 10 MeV of 3.0×10-5 at the 90% confidence level.