The semileptonic baryonic decay $D_s^{+}\to p\bar{p}{e}^{+}{\nu }_e$

Abstract

The decay $D_s^{+}\to p\bar{p}{e}^{+}{\nu }_e$ with a proton-antiproton pair in the final state is unique in the sense that it is the only semileptonic baryonic decay which is physically allowed in the charmed meson sector. Its measurement will test our basic knowledge on semileptonic $D_s^{+}$ decays and the low-energy $p\bar{p}$ interactions. Taking into account the major intermediate state contributions from $\eta ,{\eta }^{\prime },f_0(980)$ and $X(1835)$, we find that its branching fraction is at the level of $10^{-9}\sim 10^{-8}$. The location and the nature of $X(1835)$ state are crucial for the precise determination of the branching fraction. We wish to trigger a new round of a careful study with the upcoming more data in BESIII as well as the future super tau-charm factory.

final version, accepted for publication in Phys. Lett. B

References in corpus (16)

• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Comprehensive Amplitude Analysis of $\gamma \gamma \to {\pi }^{+}{\pi }^{-},{\pi }^0{\pi }^0$ and $\overline{K}K$ below 1.5 GeV
• Different pole structures in line shapes of the $X(3872)$
• Branching fractions of semileptonic $D$ and $D_s$ decays from the covariant light-front quark model
• Prospects for rare and forbidden hyperon decays at BESIII
• Two photon couplings of the lightest isoscalars from BELLE data
• Lightest scalar and tensor resonances in $\gamma \gamma \to \pi \pi$ after the Belle experiment
• Hadronic D decays involving even-parity light mesons
• Charmful Three-body Baryonic B decays
• $X(1835)$ and the New Resonances $X(2120)$ and $X(2370)$ Observed by the BES Collaboration
• Exclusive Baryonic B Decays Circa 2005
• CP Asymmetries in Strange Baryon Decays
• Four-body baryonic decays of $B\to p\bar{p}{\pi }^{+}{\pi }^{-}({\pi }^{+}{K}^{-})$ and $\Lambda \bar{p}{\pi }^{+}{\pi }^{-}(K^{+}{K}^{-})$
• Baryonic D Decay $D_s^{+}\to p\bar{n}$ and Its Implication
• Strong and Electromagnetic Decays of X(1835) as a Baryonium State
• On the Case for a Super Tau-Charm Factory

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