In this paper we evaluate the self-energy of the vector mesons at one loop in our recently proposed subtraction scheme for massive nonlinearly realized SU(2) Yang-Mills theory. We check the fulfillment of physical unitarity. The resulting self-mass can be compared with the value obtained in the massive Yang-Mills theory based on the Higgs mechanism, consisting in extra terms due to the presence of the Higgs boson (tadpoles included). Moreover we evaluate all the one-loop counterterms necessary for the next order calculations. By construction they satisfy all the equations of the model (Slavnov-Taylor, local functional equation and Landau gauge equation). They are sufficient to make all the one-loop amplitudes finite through the hierarchy encoded in the local functional equation.
|Titolo:||One-loop self-energy and counterterms in a massive Yang-Mills theory based on the nonlinearly realized gauge group|
|Autori interni:||FERRARI, RUGGERO (Secondo)|
QUADRI, ANDREA (Ultimo)
BETTINELLI, DANIELE (Primo)
|Parole Chiave:||Massive Yange Mills ; self-energy ; Higgs mechanism ; nonlinear realization of gauge group|
|Settore Scientifico Disciplinare:||Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici|
|Data di pubblicazione:||2008|
|Digital Object Identifier (DOI):||10.1103/PhysRevD.77.105012|
|Appare nelle tipologie:||01 - Articolo su periodico|
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