Leptonic and semileptonic charm decays at BESIII

TL;DR

The BESIII collaboration reports precise measurements of leptonic and semileptonic charm decays, including branching fractions, CKM matrix elements, decay constants, form factors, and tests of lepton flavor universality, advancing understanding of charm physics.

Contribution

This work provides new experimental data on charm decays, including measurements of CKM elements and tests of lepton flavor universality, using BESIII data at various energies.

Findings

Measured branching fractions of charm decays.

Determined CKM matrix elements |V_{cs}| and |V_{cd}|.

Performed tests of lepton flavor universality.

Abstract

The BESIII collaboration has achieved important measurements in charmed purely leptonic and semi-leptonic decays using data samples collected at center-of-mass energies of 3.773 GeV, 4.128-4.226 GeV, and 4.237-4.669 GeV. This proceeding presents recent BESIII results on charmed purely leptonic and semileptonic decays, including measurements of branching fractions, the Cabibbo-Kobayashi-Maskawa matrix elements $|V_{cs}|$ and $|V_{cd}|$, decay constants and form factors, as well as a test of the Lepton flavor universality.