Recent Progress in Leptonic and Semileptonic Decays of Charmed Hadrons

Abstract

We present a comprehensive review of purely leptonic and semileptonic decays of $D^{0(+)}$, $D_s^{+}$, and charmed baryons (including ${\Lambda }_c^{+}$, ${\Xi }_c$ and ${\Omega }_c$). The precise studies of these decays help deepen our understanding and knowledge of quantum chromodynamics via measuring decay constants and form factors, and test the Standard Model through examining the unitarity of Cabibbo-Kobayashi-Maskawa matrix and lepton flavor universality. We give an overview of the theoretical and experimental tools before discussing the recent progress. The data sets collected by BESIII near the production thresholds of $D\bar{D}$, $D_s^{(\ast )+}{D}_s^{(\ast )-}$ and ${\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ offer important opportunities for studies of charm physics.

24 pages, 10 figures

References in corpus (26)

• Update: Precision D_s decay constant from full lattice QCD using very fine lattices
• Charmed and light pseudoscalar meson decay constants from four-flavor lattice QCD with physical light quarks
• Leptonic decay constants fK, fD and fDs with Nf = 2+1+1 twisted-mass lattice QCD
• pi/K -> e nu branching ratios to O(e^2 p^4) in Chiral Perturbation Theory
• ${\Lambda }_c\to \Lambda {\ell }^{+}{\nu }_{\ell }$ form factors and decay rates from lattice QCD with physical quark masses
• Measurement of the q2 dependence of the Hadronic Form Factor in D0 --> K- e+ nu_e decays
• Cross section measurements of $e^{+}{e}^{-}\to \omega {\chi }_{c0}$ from $\sqrt{s}=$4.178 to 4.278 GeV
• Measurement of the Absolute Branching Fraction for ${\Lambda }_c^{+}\to \Lambda {\mu }^{+}{\nu }_{\mu }$
• Semileptonic decays of anti-triplet charmed baryons
• Testing QCD Sum Rules on the Light-Cone in D->(pi,K) l nu Decays
• Measurement of the Absolute Branching Fractions for $D_s^{-}\to {\ell }^{-}{\bar{\nu }}_{\ell }$ and Extraction of the Decay Constant $f_{D_s}$
• Measurement of the $D^0\to {\pi }^{-}{e}^{+}{\nu }_e$ differential decay branching fraction as a function of $q^2$ and study of form factor parameterizations
• Observation of $D^0$ meson decays to ${\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ and $K^{+}{K}^{-}{\mu }^{+}{\mu }^{-}$ final states
• Measurement of the Dynamics of the Decays $D_s^{+}\to {\eta }^{(\prime )}{e}^{+}{\nu }_e$
• Measurement of the $D_s^{+}\to {\ell }^{+}{\nu }_{\ell }$ branching fractions and the decay constant $f_{D_s^{+}}$
• Study of the Semileptonic Decay ${\Lambda }_c^{+}\to \Lambda e^{+}{\nu }_e$
• Semileptonic Decays of Heavy Omega Baryons in a Quark Model
• Semileptonic weak decays of anti-triplet charmed baryons in the light-front formalism
• Measurement of the Absolute Branching Fraction of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to e^{+}{\nu }_e{\bar{\nu }}_{\tau }$
• Measurements of the absolute branching fractions for $D_s^{+}\to \eta e^{+}{\nu }_e$ and $D_s^{+}\to {\eta }^{\prime }{e}^{+}{\nu }_e$
• Search for heavy Majorana neutrino in lepton number violating decays of D-> K pi e+ e+
• Charmed baryon ${\Omega }_c^0\to {\Omega }^{-}{l}^{+}{\nu }_l$ and ${\Omega }_c^0\to {\Omega }_c^{-}{\pi }^{+}({\rho }^{+})$ decays in light cone sum rules
• Semileptonic ${\Xi }_c$ baryon decays in the light cone QCD sum rules
• Search for lepton-flavor violating decays $D^0\to X^0{e}^{\pm }{\mu }^{\mp }$
• Search for the decay modes D0 -> e+e-, D0 -> mu+mu-, and D0 -> e mu
• Next-to-tribimaximal mixing against CP violation and baryon asymmetry signs

Cited by in corpus (1)

• First observation of the decay ${\Lambda }_c^{+}\to n{K}_S^0{\pi }^{+}{\pi }^0$