# 17th International Conference on Topics in Astroparticle and Underground Physics (TAUP 2021)

26 August 2021 to 3 September 2021

## An update on the two singlet Dark Matter model

30 Aug 2021, 17:10
50m
Talk in parallel session Cosmology and particle physics

### Speaker

Tanushree Basak (Indus University)

### Description

We revisit the two real singlet extension of the Standard Model with a $Z_2\times Z_2^\prime$ symmetry. One of the singlet scalars $S_2$, by virtue of an unbroken $Z_2^\prime$ symmetry, plays the role of a stable dark matter candidate. The other scalar $S_1$, with spontaneously broken $Z_2$-symmetry, mixes with the SM Higgs boson and acts as the scalar mediator. We analyze the model by putting in the entire set of theoretical and recent experimental constraints. The latest bounds from direct detection Xenon1T experiment severely restricts the allowed region of parameter space of couplings. To ensure the dark matter satisfies the relic abundance criterion, we rely on the Breit-Wigner enhanced annihilation cross-section. Further, we study the viability of explaining the observed gamma-ray excess in the galactic center in this model with a dark matter of mass in the $\sim 36-51$ GeV window and present our conclusions.

Reference to paper (DOI or arXiv) e-Print: 2105.09044 [hep-ph]

### Primary authors

Tanushree Basak (Indus University) Dr. Baradhwaj Coleppa (Indian Institute of Technology Gandhinagar) Mr. Kousik Loho (Indian Institute of Technology Gandhinagar)

### Presentation Materials

 An update on the two singlet Dark Matter model An Update on the Two Singlet Dark Matter model_Tanushree Basak_TAUP2021.mp4 Basak_Tanushree_TAUP2021.pdf
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