One-loop self-energies in the electroweak model with a nonlinearly realized gauge group

• Main Authors: Bettinelli, D. (Author), Ferrari, Ruggero (Contributor), Quadri, A. (Author)
• Other Authors: Massachusetts Institute of Technology. Center for Theoretical Physics (Contributor), Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2010-03-02T15:08:14Z.
• Subjects: Article
• Online Access: Get fulltext

We evaluate at one loop the self-energies for the W, Z mesons in the electroweak model where the gauge group is nonlinearly realized. In this model the Higgs boson parameters are absent, while a second mass parameter appears together with a scale for the radiative corrections. We estimate these parameters in a simplified fit on leptons and gauge bosons data. We check physical unitarity and the absence of infrared divergences. Landau gauge is used. As a reference for future higher order computations, the regularized D-dimensional amplitudes are provided. Eventually the limit D→4 is taken on physical amplitudes.
U.S. Department of Energy