Deppisch, F;
Hati, C;
Bolton, P;
Patra, S;
Sarkar, U;
(2019)
An alternative formulation of left-right symmetry with B−L conservation and purely Dirac neutrinos.
Physical Review D
, 100
, Article 035013. 10.1103/PhysRevD.100.035013.
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Abstract
We propose an alternative formulation of a Left-Right Symmetric Model (LRSM) where the difference between baryon number (B) and lepton number (L) remains an unbroken symmetry. This is unlike the conventional formulation, where B − L is promoted to a local symmetry and is broken explicitly in order to generate Majorana neutrino masses. In our case B−L remains a global symmetry after the left-right symmetry breaking, allowing only Dirac mass terms for neutrinos. In addition to parity restoration at some high scale, this formulation provides a natural framework to explain B −L as an anomaly-free global symmetry of the Standard Model and the non-observation of (B − L)-violating processes. Neutrino masses are purely Dirac type and are generated either through a two loop radiative mechanism or by implementing a Dirac seesaw mechanism.
| Type: | Article |
|---|---|
| Title: | An alternative formulation of left-right symmetry with B−L conservation and purely Dirac neutrinos |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.100.035013 |
| Publisher version: | https://doi.org/10.1103/PhysRevD.100.035013 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10074897 |
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