Three-loop chromomagnetic interaction in HQET

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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Bibliographic Details
Published in:Nuclear physics. B 2008-01, Vol.789 (1), p.277-293
Main Authors: Grozin, A.G., Marquard, P., Piclum, J.H., Steinhauser, M.
Format: Article
Language:English
Subjects:
Heavy quark effective theory
Radiative corrections
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Description
Summary: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.
ISSN:0550-3213
1873-1562
DOI:10.1016/j.nuclphysb.2007.08.012