One-loop self-energy and counterterms in a massive Yang-Mills theory based on the nonlinearly realized gauge group
Articolo
Data di Pubblicazione:
2008
Citazione:
One-loop self-energy and counterterms in a massive Yang-Mills theory based on the nonlinearly realized gauge group / D. Bettinelli, R. Ferrari, A. Quadri. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 77:10(2008), pp. 105012.105012.1-105012.105012.11.
Abstract:
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.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Massive Yange Mills ; self-energy ; Higgs mechanism ; nonlinear realization of gauge group
Elenco autori:
D. Bettinelli, R. Ferrari, A. Quadri
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