EPJ Web Conf.
Volume 175, 201835th International Symposium on Lattice Field Theory (Lattice 2017)
|Number of page(s)||8|
|Section||13 Weak Decays and Matrix Elements|
|Published online||26 March 2018|
Leptonic decay constants for D-mesons from 3-flavour CLS ensembles
Universität Regensburg, Institut für Theoretische Physik, 93040 Regensburg, Germany
2 Westfälische Wilhelms-Universität Münster, Institut für Theoretische Physik, Wilhelm-Klemm-Straβe 9, 48149 Münster, Germany
* Speaker, e-mail: email@example.com
Published online: 26 March 2018
e report on the status of an ongoing effort by the RQCD and ALPHA Collaborations, aimed at determining leptonic decay constants of charmed mesons. Our analysis is based on large-volume ensembles generated within the CLS effort, employing Nf = 2 + 1 non-perturbatively O(a) improved Wilson quarks, tree-level Symanzik-improved gauge action and open boundary conditions. The ensembles cover lattice spac-ings from a ≈ 0.09 fm to a ≈ 0.05 fm, with pion masses varied from 420 to 200 MeV. To extrapolate to the physical masses, we follow both the (2ml + ms) = const. and the ms = const. lines in parameter space.
© The Authors, published by EDP Sciences, 2018
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