Using an electron-positron collision data sample of 2.93 fb−1 collected at a center-of-mass energy of sqrt(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.

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

FARINELLI, Riccardo;GARZIA, Isabella;MEZZADRI, Giulio;
2017

Abstract

Using an electron-positron collision data sample of 2.93 fb−1 collected at a center-of-mass energy of sqrt(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.
2017
Ablikim, M.; Achasov, M.  . n.; Ahmed, S.; Ai, X.  . c.; Albayrak, O.; Albrecht, M.; Ambrose, D.  . j.; Amoroso, A.; An, F.  . f.; An, Q.; Bai, J.  . ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2370016
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