Leptonic D_s decays in two-flavour lattice QCD

Abstract

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.

arXiv comment11 pages including figures and tables, latex2e; version published in Phys. Rev. D; expanded discussion of systematics, small additions to the text and references added; results unchanged

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Cited by in corpus (7)

• FLAG Review 2019
• FLAG Review 2021
• Charmed and $\varphi$ meson decay constants from 2+1-flavor lattice QCD
• Charged current electroproduction of a charmed meson at an electron-ion collider
• Updated measurement of the branching fraction of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to {\pi }^{+}{\bar{\nu }}_{\tau }$
• Charm sea effects on charmonium decay constants and heavy meson masses
• Extraction of $B_s\to D_s^{(\ast )}$ form factors from $N_f=2$ lattice QCD