The chromo-polarizabilities of a heavy quark at weak coupling
High Energy Physics - Phenomenology
2018-08-28 v3
Abstract
We obtain the renormalization group improved expressions of the Wilson coefficients of the HQET Lagrangian with leading logarithmic approximation to for the spin-independent sector, which includes the heavy quark chromo-polarizabilites. Our analysis includes the effects induced by spectator quarks. We observe that the numerical impact of these logarithms is very large in most cases.
Keywords
Cite
@article{arxiv.1710.07647,
title = {The chromo-polarizabilities of a heavy quark at weak coupling},
author = {Daniel Moreno and Antonio Pineda},
journal= {arXiv preprint arXiv:1710.07647},
year = {2018}
}
Comments
34 pages, 14 figures; Journal version. Ref. [14] added. Fig. 4 slightly modified. More detailed comparison with Refs. [9,13,14] made. Results unchanged. v3: 1/2 missing factor in the c_kc_F^2 term in Eqs. 32 and 33 (and Eqs. 34, 35) corrected. Eqs. 55-60, 65-66 and Fig. 5 corrected. Numerical impact very small. Conclusions unchanged