Leptonic D s decays in two-flavor lattice QCD
Résumé
We report on a two-flavour lattice QCD study of the D_s and D_s^* leptonic decays parameterized by the decay constants f_{D_s} and f_{D_s^*}. As the phenomenology in the D_s sector seems very promising in the next years with the experiments LHCb and Belle II, it is worth putting a big effort in lattice computations regarding its non-perturbative QCD contributions. Before examining more challenging processes such as hadron-hadron transitions, a natural first step is to address some basic aspects in the context of leptonic decays, where systematic uncertainties from excited state contaminations and cut-off effects in the computation of charmed meson decay matrix elements can be investigated in a more straightforward setting.
Mots clés
new physics
LHC-B
BELLE
hadron hadron
excited state
lattice: effect
leptonic decay
numerical calculations: Monte Carlo
quark: flavor: 2
fermion: clover
quark: Wilson
numerical calculations
lattice field theory
quantum chromodynamics: nonperturbative
decay constant
D/s: leptonic decay
lattice QCD
charmed meson: decay
Lattice field theories