Matching at one loop for the four-quark operators in NRQCD - art. no. 114011

Authors
Pineda, A Soto, J
Citation
A. Pineda et J. Soto, Matching at one loop for the four-quark operators in NRQCD - art. no. 114011, PHYS REV D, 5811(11), 1998, pp. 4011
Citations number
56
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
05562821 → ACNP
Volume
5811
Issue
11
Year of publication
1998
Database
ISI
SICI code
0556-2821(199812)5811:11<4011:MAOLFT>2.0.ZU;2-I
Abstract
The matching coefficients for the four-quark operators in NRQCD (NRQED) are calculated at one loop using dimensional regularization for ultraviolet an d infrared divergences. The matching for the electromagnetic current follow s easily from our results. Both the unequal and equal mass cases are consid ered. The role played by the Coulomb infrared singularities is explained in detail. [S0556-2821(98)03621-2].