Search for the Radiative Leptonic Decay $D^{+}\to \gamma e^{+}{\nu }_e$

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 $D^{+}\to \gamma e^{+}{\nu }_e$. The analysis is performed with a double tag method. We do not observe a significant $D^{+}\to \gamma e^{+}{\nu }_e$ signal, and obtain an upper limit on the branching fraction of $D^{+}\to \gamma e^{+}{\nu }_e$ decay with the energy of radiative photon larger than 10 MeV of $3.0\times 10^{-5}$ at the 90% confidence level.

8 pages, 3 figures. Fix funding number format

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Cited by in corpus (9)

• Recent Progress in Leptonic and Semileptonic Decays of Charmed Hadrons
• Search for the decay $D^0\to {\pi }^0\nu \bar{\nu }$
• Measurement of the absolute branching fractions for purely leptonic $D_s^{+}$ decays
• Methods for high-precision determinations of radiative-leptonic decay form factors using lattice QCD
• Search for the decay $D_s^{+}\to \gamma e^{+}{\nu }_e$
• Factorization of radiative leptonic D-meson decay with sub-leading power corrections
• Radiative leptonic decays on the lattice
• Search for the radiative leptonic decay $D^{+}\to \gamma e^{+}{\nu }_e$ using Deep Learning
• Rare B, D and K decays, radiative and electroweak penguin decays, including constraints on $V_{td}/V_{ts}$ and ${\epsilon }^{\prime }/\epsilon$: Summary of CKM 2018 working group 3