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


Autoria(s): Pineda, Antonio; Soto Riera, Joan
Contribuinte(s)

Universitat de Barcelona

Data(s)

11/05/2010

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

http://hdl.handle.net/2445/12437

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