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arXiv · 1803.03065

Leptonic D_s decays in two-flavour lattice QCD

Benoit Blossier·Jochen Heitger·Matthias Post
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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.

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Benoit Blossier, Jochen Heitger, Matthias Post. 2018-03-08. Leptonic D_s decays in two-flavour lattice QCD. https://doi.org/10.1103/physrevd.98.054506

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