Speaker
Description
Different models have been proposed to resolve the puzzling mystery of dark matter. We study a feasible dark matter candidate in the framework of minimal extended seesaw (MES) [1]. The model is augmented with ∆(96) symmetry that leads to $TM_1$ mixing pattern. A sterile state in intermediate mass range has been added to the standard model to realize the framework [2]. The structure of the mass matrices are obtained from ∆(96) symmetry[3]. We find that sterile neutrino mass in keV range can have significant contribution to the dark matter content of the Universe [4]. The viability of the proposed model is tested considering the allowed cosmological ranges of the relic abundance, decay rates as well as its mixing with the active neutrinos.
References:
1. M. Drewes et al., A white paper on keV sterile neutrino dark matter, JCAP 01 (2017) 025.
2. Zhang H. Light Sterile Neutrino in the Minimal Extended Seesaw. Phys Lett B (2012) 714:262
3. Abada. A., Arcadi. G. and Lucente. M., Dark matter in the minimal inverse seesaw mechanism, JCAP 10 (2014) 001.
4. Gautam N. , Krishnan R., and Das M.K., “Effect of Sterile Neutrino on Low-Energy Processes in Minimal Extended Seesaw With Δ(96) Symmetry and TM1 Mixing”, Front. In Phys.0 (2021)417.
| Field of contribution | Phenomenology |
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