Three-Loop Chromomagnetic Interaction in HQET
arXiv:0707.1388 · doi:10.1016/j.nuclphysb.2007.08.012
Abstract
We compute the three-loop QCD corrections to the quark chromomagnetic moment and thus obtain the matching coefficient and the anomalous dimension of the chromomagnetic interaction in HQET. As a byproduct we obtain the three-loop corrections to the quark anomalous magnetic moment.
22 pages