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.File in questo prodotto:
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