Speaker: Antonio PINEDA
Title
Avoiding the renormalon in the determination of the heavy quark masses
Abstract
We approximately compute the normalization constant of the first infrared renormalon of the pole mass (and the estatic potential). Estimates of higher order terms in the perturbative relation between the pole mass and the MS mass (and in the relation between the static potential and alpha) are given. We define a matching scheme (the renormalon substracted scheme) between QCD and any effective field theory with heavy quarks where, besides the usual perturbative matching, the first renormalon in the Borel plane of the pole mass is substracted. A determination of the bottom MS mass from the Upsilon(1S) system is performed with this new scheme and the errors are studied. We finally discuss upon eventual improvements of these determinations.


Slides