Abelian Extension of Standard Model with Four Generations

Details Abelian Extension of Standard Model with Four Generations Abelian Extension of Standard Model with Four Generations

2011-09-15

arxiv.org/abs/1109.3363v2

Phys. Rev. D 85, 015006 (2012)

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 1 figure, Journal Version

Scientific paper

10.1103/PhysRevD.85.015006

An abelian gauge extension of the Standard Model is proposed with a fourth generation. The fourth generation fermions obtain their masses from a heavier Higgs doublet which makes no tree level contributions to the first three generations masses. Light first three generations neutrino masses continue to have type I seesaw explanation whereas the fourth generation neutrino turns out to be a heavy Dirac neutrino. In the minimal version of such a model with no off-diagonal Yukawa couplings between the fourth and the first three generation, such a heavy Dirac neutrino can be long lived on cosmological time scales. In this model the stated LHC exclusion range $120 \; \text{GeV} < m_H < 600 \; \text{GeV}$ on the lighter Higgs placed in the context of generic fourth generation standard model is evaded. Also, the Dirac fourth generation neutrino in this model, if stable would constitute upto 1% of the cold Dark Matter in the Universe.

Affiliated with

Also associated with

No associations

Rating

Abelian Extension of Standard Model with Four Generations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Abelian Extension of Standard Model with Four Generations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abelian Extension of Standard Model with Four Generations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-673513