Eur. Phys. J. C 25, 233-244 (2002)
DOI: 10.1007/s10052-002-0985-z
One loop scalar functions in the heavy-quark effective theory
J. ZupanJ. Stefan Institute, Jamova 39, 1001 Ljubljana, Slovenia
(Received: 15 February 2002 / Revised version: 15 April 2002 / Published online: 12 July 2002 )
Abstract
We find general solutions for the dimensionally regularized
scalar one-loop three-point and four-point functions with one
heavy-quark
propagator. The
scalar one-point function vanishes, while the expression for
the two-point
function has been found before. For the latter we give a detailed
derivation.
We also discuss some special cases and compile useful formulae.
© Società Italiana di Fisica, Springer-Verlag 2002
