Matching at one loop for the four-quark operators in NRQCD
Abstract
The matching coefficients for the four-quark operators in NRQCD (NRQED) are calculated at one loop using dimensional regularization for ultraviolet and infrared divergences. The matching for the electromagnetic current follows easily from our results. Both the unequal and equal mass cases are considered. The role played by the Coulomb infrared singularities is explained in detail.
- Publication:
-
Physical Review D
- Pub Date:
- December 1998
- DOI:
- 10.1103/PhysRevD.58.114011
- arXiv:
- arXiv:hep-ph/9802365
- Bibcode:
- 1998PhRvD..58k4011P
- Keywords:
-
- 12.38.Bx;
- 12.20.Ds;
- 14.40.Gx;
- Perturbative calculations;
- Specific calculations;
- Mesons with S=C=B=0 mass>2.5 GeV;
- High Energy Physics - Phenomenology
- E-Print:
- 19 pages, LaTeX, two eps files