Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
$K$- and $D_{(s)}$-meson leptonic decay constants with physical light, strange and charm quarks by ETMC
P. Dimopoulos*, R. Frezzotti, M. Garofalo and S. Simula
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Pre-published on: May 16, 2022
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Abstract
We present a lattice QCD computation and preliminary results for the leptonic decay constants of the pseudoscalar mesons $K$, $D$ and $D_{s}$ in the isosymmetric QCD limit. The computation is based on simulations of $N_f= 2+1+1$ dynamical quarks performed by the Extended Twisted Mass Collaboration (ETMC), where the light, strange and charm quark masses are all tuned at their physical values. We also present preliminary unitarity checks for the first and second rows of the Cabibbo-Kobayashi-Maskawa matrix.
DOI: https://doi.org/10.22323/1.396.0472
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