TL;DR
This paper reviews recent experimental measurements of leptonic decays of D and Ds mesons, comparing decay constants with theoretical Lattice QCD predictions, highlighting progress in understanding charm quark dynamics.
Contribution
It provides updated experimental decay constants for D and Ds mesons and compares these with Lattice QCD calculations, summarizing recent experimental progress.
Findings
Measured decay constant f_D = 206.7 ± 8.9 MeV
Measured decay constant f_Ds = 257.3 ± 5.3 MeV
Comparison with Lattice QCD shows good agreement
Abstract
We review the recent experimental results on D and Ds meson leptonic decays from CLEO-c, Belle, and BABAR, which results in the decay constants f_D= (206.7 +- 8.9) MeV and f_Ds= (257.3 +- 5.3) MeV. The latter is an average obtained by the Heavy Flavor Averaging Group (HFAG). Comparisons with Lattice QCD (LQCD) calculations are discussed.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research