Matching at one loop for the four-quark operators in NRQCD
Contribuinte(s) |
Universitat de Barcelona |
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Data(s) |
11/05/2010
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Resumo |
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. |
Identificador | |
Idioma(s) |
eng |
Publicador |
The American Physical Society |
Direitos |
(c) The American Physical Society, 1998 info:eu-repo/semantics/openAccess |
Palavras-Chave | #Pertorbació (Matemàtica) #Partícules (Física nuclear) #Perturbation (Mathematics) #Particles (Nuclear physics) |
Tipo |
info:eu-repo/semantics/article |