Speaker
Dr
Hiromasa Takaura
(KEK)
Description
In this talk, I discuss our recent determination of nonperturbative matrix elements of heavy quark effective theory (HQET), $\bar{\Lambda}$ and $\mu_{\pi}^2$, which universally parametrize nonperturbative effects on various observables in heavy-light meson systems. In this determination, B meson masses and D meson masses are used as inputs. Using our renormalon subtraction method based on Fourier transform, we subtract not only the u=1/2 renormalon but also the next IR renormalon at u=1 for the first time, from heavy quark pole masses to determine $\bar{\Lambda}$ and $\mu_{\pi}^2$ accurately.
Primary author
Dr
Hiromasa Takaura
(KEK)
