Type I and $new$ seesaw in left-right symmetric theories

Details Type I and $new$ seesaw in left-right symmetric theories Type I and $new$ seesaw in left-right symmetric theories

2010-05-09

arxiv.org/abs/1005.1377v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Published in PLB

Scientific paper

10.1016/j.physletb.2010.05.055

We extend the Type I seesaw and suggest a $new$ seesaw mechanism to generate neutrino masses within the left-right symmetric theories where parity is spontaneously broken. We construct a next to minimal left-right symmetric model where neutrino masses are determined irrespective of the B-L breaking scale and call it the $new$ seesaw mechanism. In this scenario B-L scale can be very low. This makes B-L gauge boson and the quasi-Dirac $heavy$ leptons very light. These TeV scale particles could have large impact on lepton flavor and CP violating processes. We also shed light on the phenomenological aspects of the model within the reach of the LHC.

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