Self-consistent variational approach to the minimal left-right symmetric model of electroweak interactions
arXiv:hep-ph/0605276 · doi:10.1103/PhysRevD.74.115001
Abstract
The problem of mass generation is addressed by a Gaussian variational method for the minimal left-right symmetric model of electroweak interactions. Without any scalar bidoublet, the Gaussian effective potential is shown to have a minimum for a broken symmetry vacuum with a finite expectation value for both the scalar Higgs doublets. The symmetry is broken by the fermionic coupling that destabilizes the symmetric vacuum, yielding a self consistent fermionic mass. In this framework a light Higgs is only compatible with the existence of a new high energy mass scale below 2 TeV.
5 pages, 3 figures. New comments added and typing errors in eq. 8 and 11 corrected