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arXiv · 1710.07647

The chromo-polarizabilities of a heavy quark at weak coupling

Daniel Moreno·Antonio Pineda
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Abstract

We obtain the renormalization group improved expressions of the Wilson coefficients of the HQET Lagrangian with leading logarithmic approximation to ${\cal O}(1/m^3)$ 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.

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Daniel Moreno, Antonio Pineda. 2017-10-20. The chromo-polarizabilities of a heavy quark at weak coupling. https://doi.org/10.1103/physrevd.97.016012

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