Search for the decay $D_s^{+}\to \gamma e^{+}{\nu }_e$

Abstract

A search for the rare radiative leptonic decay $D_s^{+}\to \gamma e^{+}{\nu }_e$ is performed for the first time using electron-positron collision data corresponding to an integrated luminosity of 3.19 fb${}^{-1}$, collected with the BESIII detector at a center-of-mass energy of 4.178 GeV. No evidence for the $D_s^{+}\to \gamma e^{+}{\nu }_e$ decay is seen and an upper limit of $\mathcal{B}(D_s^{+}\to \gamma e^{+}{\nu }_e)<1.3\times 10^{-4}$ is set on the partial branching fraction at a 90\% confidence level for radiative photon energies $E_{\gamma }^{\ast }>0.01$~GeV.

9 pages, 7 figures

References in corpus (14)

• Design and Construction of the BESIII Detector
• Kernel Estimation in High-Energy Physics
• Leptonic and Semileptonic Decays of Charm and Bottom Hadrons
• Radiative leptonic decays of B mesons in QCD
• Exclusive event generator for $e^{+}{e}^{-}$ scan experiments
• Radiative Leptonic Decays of Heavy Mesons
• Pure Leptonic Radiative Decays $B^{\pm },D_s\to \ell \nu \gamma$ and the Annihilation Graph
• Study of Radiative Leptonic D Meson Decays
• Radiative Leptonic Decays of D_s^\pm and D^\pm Mesons
• Factorization of Radiative Leptonic Decays of $B^{-}$ and $D^{-}$ Mesons
• Search for the Radiative Leptonic Decay $D^{+}\to \gamma e^{+}{\nu }_e$
• Study on efficiency of event start time determination at BESIII
• Radiative Leptonic Decays of the charged $B$ and $D$ Mesons Including Long-Distance Contribution
• Branching fraction measurements of $\psi (3686)\to \gamma {\chi }_{cJ}$

Cited by in corpus (9)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Measurement of the absolute branching fractions for purely leptonic $D_s^{+}$ decays
• Measurement of the absolute branching fraction of inclusive semielectronic $D_s^{+}$ decays
• Methods for high-precision determinations of radiative-leptonic decay form factors using lattice QCD
• Precision Measurements of $D_s^{+}\to \eta e^{+}{\nu }_e$ and $D_s^{+}\to {\eta }^{\prime }{e}^{+}{\nu }_e$
• Measurement of the branching fraction of leptonic decay $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to {\pi }^{+}{\pi }^0{\bar{\nu }}_{\tau }$
• Improved measurement of the semileptonic decay $D_s^{+}\to K^0{e}^{+}{\nu }_e$
• Radiative leptonic decays on the lattice
• Study of the doubly Cabibbo-suppressed decays $D_s^{+}\to K^{+}{K}^{+}{\pi }^{-}$ and $D_s^{+}\to K^{+}{K}^{+}{\pi }^{-}{\pi }^0$