Description
We report on the nonperturbative calculation of the inclusive decay rate for semileptonic decays of the $D_s$ meson from lattice QCD. We present a short overview on how the Chebyshev approximation can be employed in order to obtain predictions for the total inclusive decay rate from hadronic correlators generated from lattice simulations. We further present first estimates on the systematic effects associated with the analysis. Namely, we focus on the systematic errors introduced by the finite polynomial order in the Chebyshev approximation used in the analysis and the error due to finite-volume effects.
Author
Ryan Kellermann
(High Energy Accelerator Research Organization (KEK))
Co-authors
Ahmed Elgaziari
(University of Southampton)
Alessandro Barone
(Johannes Gutenberg University Mainz)
Andreas Juettner
Shoji Hashimoto
(KEK)
Takashi Kaneko
Zhi Hu
