Recent Progress in Leptonic and Semileptonic Decays of Charmed Hadrons

TL;DR

This review summarizes recent experimental and theoretical progress in leptonic and semileptonic decays of charmed hadrons, highlighting their role in testing the Standard Model and understanding quantum chromodynamics.

Contribution

It provides a comprehensive overview of recent advances in charm decay studies, combining experimental data and theoretical insights to deepen understanding of fundamental physics.

Findings

Improved measurements of decay constants and form factors.

Tests of CKM matrix unitarity and lepton flavor universality.

Enhanced understanding of quantum chromodynamics in charm decays.

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 $D\bar{D}$, $D_s^{(*)+}D_s^{(*)-}$ and $\Lambda_c^{+}\bar{\Lambda}_c^{-}$ offer important opportunities for studies of charm physics.