Ja. Cuthbert et Rd. Viollier, DIMENSIONAL REGULARIZATION AND THE SELF-ENERGY OF A MASSIVE QUARK IN A CAVITY, Zeitschrift fur Physik. C, Particles and fields, 58(2), 1993, pp. 295-298
Self-energies of massive quarks are calculated in the framework of cav
ity QCD to order alpha(s) for the excited modes of a spherical cavity.
The calculation, closely related to Schwinger's proper time technique
, is based on the ms dimensional regularization scheme in free space.