Dirac or Inverse Seesaw Neutrino Masses from Gauged B - L Symmetry

@article{Ma2015DiracOI,
  title={Dirac or Inverse Seesaw Neutrino Masses from Gauged B - L Symmetry},
  author={Ernest Ma and Rahul Srivastava},
  journal={arXiv: High Energy Physics - Phenomenology},
  year={2015}
}
  • E. Ma, R. Srivastava
  • Published 1 April 2015
  • Physics
  • arXiv: High Energy Physics - Phenomenology
The gauged $B - L$ symmetry is one of the simplest and well studied extension of standard model. In the conventional case, addition of three singlet right handed neutrinos each transforming as $-1$ under the $B - L$ symmetry renders it anomaly free. It is usually assumed that the $B - L$ symmetry is spontaneously broken by a singlet scalar having two units of $B - L$ charge, resulting in a natural implementation of Majorana seesaw mechanism for neutrinos. However, as we discuss in this… 

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References

SHOWING 1-10 OF 40 REFERENCES

Quasi-Dirac neutrinos in a model with local B - L symmetry

In a model with B − L gauge symmetry, right-handed neutrinos may have exotic local B − L charge assignments: two of them with B − L = −4 and the other one having B − L = 5. Then, it is natural to

Gauge Trimming of Neutrino Masses

We show that under a new U(1) gauge symmetry, which is non-anomalous in the presence of one ''right-handed neutrino'' per generation and consistent with the standard model Yukawa couplings, the most

New U(1) gauge symmetry of quarks and leptons

Instead of anchoring the seesaw mechanism with the conventional heavy right-handed neutrino singlet, a small Majorana neutrino mass may be obtained just as well with the addition of a heavy triplet

Leptogenesis with Lepton-Number-Violating Dirac Neutrinos

Dirac neutrinos with lepton-number-violating interactions can give rise to a new leptogenesis mechanism. In its simplest renormalizable realization, based on a gauged B-L symmetry spontaneously