Search for the rare semi-leptonic decay $J/\psi \to D^{-}{e}^{+}{\nu }_e+c.c.$

Abstract

Using $10.1\times 10^9$ $J/\psi$ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy $\sqrt{s}=3.097\mathrm{GeV}$ and collected with the BESIII detector, we present a search for the rare semi-leptonic decay $J/\psi \to D^{-}{e}^{+}{\nu }_e+c.c.$. No excess of signal above background is observed, and an upper limit on the branching fraction $\mathcal{B}(J/\psi \to D^{-}{e}^{+}{\nu }_e+c.c.)<7.1\times 10^{-8}$ is obtained at $90\%$ confidence level. This is an improvement of more than two orders of magnitude over the previous best limit.

References in corpus (14)

• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• Coherent Exclusive Exponentiation For Precision Monte Carlo Calculations
• Topcolor Assisted Technicolor
• TopoAna: A generic tool for the event type analysis of inclusive Monte-Carlo samples in high energy physics experiments
• The transition form factors for semi-leptonic weak decays of $J/\psi$ in QCD sum rules
• Combined estimation for multi-measurements of branching ratio
• Rare Decays of ψand Υ
• Flavor Changing processes in Quarkonium Decays
• Effects of Flavor Dependence on Weak Decays of J/psi and Υ
• Weak decays of $J/\psi$: the non-leptonic case
• Coherent Exclusive Exponentiation for Precision Monte Carlo Calculations
• Exclusive decays $J/\psi \to D_{(s)}^{(\ast )-}{\ell }^{+}{\nu }_{\ell }$ in a covariant constituent quark model with infrared confinement
• Measurements of absolute branching fractions for $D$ mesons decays into two pseudoscalar mesons
• Weak Decays of $J/\psi$ and ${\rm Y}(1S)$

Cited by in corpus (4)

• Visualization for physics analysis improvement and applications in BESIII
• First lattice QCD calculation of $J/\psi$ semileptonic decay containing $D$ and $D_s$ particles
• Search for the weak decay $\psi (3686)\to {\Lambda }_c^{+}{\bar{\Sigma }}^{-}+c.c$
• Exclusive semileptonic and nonleptonic $J/\psi$ decays