EPJ

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EPJ C - Particles and Fields
Particles and Fields
Eur. Phys. J. C 32, 555-559 (2004)
DOI: 10.1140/epjc/s2003-01442-7

Symmetry breaking of the symmetric left-right model without a scalar bidoublet

F. Siringo

Dipartimento di Fisica e Astronomia, Università di Catania, INFN Sezione di Catania and INFM UdR di Catania, Via S. Sofia 64, 95123 Catania, Italy

fabio.siringo@ct.infn.it

(Received: 10 August 2003 / Revised version: 18 October 2003/ / Published online: 18 December 2003 )

Abstract
By invoking the existence of a general O(2) symmetry, a minimal left-right symmetric model based on the gauge group $G=SU(2)_{\mathrm {L}}\otimes SU(2)_{\mathrm {R}}\otimes U(1)_{B-L}$ is shown to require the existence of only two physical Higgs bosons. The lighter Higgs is predicted to have a small mass which could be evaluated by standard perturbation theory. The fermionic mass matrices are recovered by insertion of ad hoc fermion-Higgs interactions. The model is shown to be undistinguishable from the standard model at the currently reachable energies.



© Società Italiana di Fisica, Springer-Verlag 2004

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