Matching at one loop for the four-quark operators in NRQCD

Details Matching at one loop for the four-quark operators in NRQCD Matching at one loop for the four-quark operators in NRQCD

1998-02-19

arxiv.org/abs/hep-ph/9802365v1

Phys.Rev. D58 (1998) 114011

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, LaTeX, two eps files

Scientific paper

10.1103/PhysRevD.58.114011

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.

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