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Title: Matching at one loop for the four-quark operators in NRQCD
Author: Pineda, Antonio (Pineda Ruiz)
Soto Riera, Joan
Keywords: Pertorbació (Matemàtica)
Partícules (Física nuclear)
Perturbation (Mathematics)
Particles (Nuclear physics)
Issue Date: 1998
Publisher: The American Physical Society
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.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review D, 1998, vol. 58, núm. 11, p. 114011-1-114011-9
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ISSN: 0556-2821
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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