18-24 June 2017
Palacio de Congresos
Europe/Madrid timezone
Contribution Parallel
Seminarios 6+7
Weak Decays and Matrix Elements
Leptonic decay constants for D-mesons from 3-flavour CLS ensembles
Speakers
- Mr. Kevin ECKERT
Primary authors
- Mr. Kevin ECKERT (Institut für Theoretische Physik, Westfälische Wilhelms-Universität Münster)
- Mr. Stefan HOFMANN (Institut für Theoretische Physik, Universität Regensburg)
Co-authors
- Dr. Jochen HEITGER (Westfaelische Wilhelms-Universitaet Muenster, Institut fuer Theoretische Physik)
- Dr. Sara COLLINS (Institut für Theoretische Physik, Universität Regensburg)
- Dr. Wolfgang SÖLDNER (Institut für Theoretische Physik, Universität Regensburg)
Content
We 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 $N_f=2+1$ non-perturbatively $\mathcal{O}(a)$ improved Wilson quarks, tree-level Symanzik-improved gauge action and open boundary conditions. The ensembles cover lattice spacings from $a \approx 0.09 \text{fm}$ to $a \approx 0.05 \text{fm}$, with pion masses varied from $420$ to $200 \text{MeV}$. To extrapolate to the physical masses, we follow both the $(2m_l + m_s ) = const.$ and the $m_s = const.$ lines in parameter space.
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Weak Decays and Matrix Elements
