Godbole, RM and Maharathy, SP and Mandal, S and Mitra, M and Sinha, N (2021) Interference effect in lepton number violating and conserving meson decays for a left-right symmetric model. In: Physical Review D, 104 (9).
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Abstract
We study the effect of interference on the lepton number violating (LNV) and lepton number conserving (LNC) three-body meson decays M1+�li+lj±� that arise in a TeV-scale left-right symmetric model (LRSM) with degenerate or nearly degenerate right-handed (RH) neutrinos. The LRSM contains three RH neutrinos and a RH gauge boson. The RH neutrinos with masses in the range of MN� (MeV-few GeV) can give resonant enhancement in the semileptonic LNV and LNC meson decays. In the case where only one RH neutrino contributes to these decays, the predicted new physics branching ratios of semileptonic LNV and LNC meson decays M1+�li+lj+�- and M1+�li+lj-�+ are equal. We find that with at least two RH neutrinos contributing to the process, the LNV and LNC decay rates can differ. Depending on the neutrino mixing angles and CP-violating phases, the branching ratios of LNV and LNC decay channels mediated by the heavy neutrinos can be either enhanced or suppressed, and the ratio of these two rates can differ from unity. © 2021 authors. Published by the American Physical Society.
| Item Type: | Journal Article |
|---|---|
| Publication: | Physical Review D |
| Publisher: | American Physical Society |
| Additional Information: | The copyright for this article belongs to American Physical Society |
| Department/Centre: | Division of Physical & Mathematical Sciences > Centre for High Energy Physics |
| Date Deposited: | 21 Dec 2021 05:56 |
| Last Modified: | 21 Dec 2021 05:56 |
| URI: | http://eprints.iisc.ac.in/id/eprint/70714 |
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