Three-Loop Chromomagnetic Interaction in HQET
A.G. Grozin, P. Marquard, J.H. Piclum, M. Steinhauser
TL;DR
This paper calculates three-loop quantum chromodynamics corrections to the chromomagnetic interaction in Heavy Quark Effective Theory, providing precise matching coefficients and anomalous dimensions crucial for high-precision particle physics predictions.
Contribution
It presents the first three-loop calculations of the chromomagnetic interaction in HQET, advancing theoretical accuracy in heavy quark physics.
Findings
Three-loop corrections to the quark chromomagnetic moment
Matching coefficient for chromomagnetic interaction at three loops
Anomalous dimension of the chromomagnetic operator at three loops
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.
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