Dirac or inverse seesaw neutrino masses with B − L gauge symmetry and S 3 flavor symmetry

By E. Ma, R. Srivastava. 2014

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Abstract Many studies have been made on extensions of the standard model with B − L gauge symmetry. The addition of three singlet (right-handed) neutrinos renders it anomaly-free. It has always been assumed that the spontaneous breaking of B − L is accomplished by a singlet scalar field carrying two units of B − L charge. This results in a very natural implementation of the Majorana seesaw mechanism for neutrinos. However, there exists in fact another simple anomaly-free solution which allows Dirac or inverse seesaw neutrino masses. We show for the first time these new possibilities and discuss an application to neutrino mixing with S 3 flavor symmetry.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ede8f5d93e7cc1dda80a68e0fce301a7edead993