July 29, 2019 to August 2, 2019
Northeastern University
US/Eastern timezone

A sub-GeV dark matter model

Aug 1, 2019, 2:34 PM
17m
West Village G 102 (Northeastern University)

West Village G 102

Northeastern University

Oral Presentation Dark Matter Dark Matter

Speaker

Prof. Bhaskar Dutta

Description

An extension of the Standard Model gauge symmetry by the gauge group $U(1)_{T3R}$ is proposed in order to understand the Yukawa coupling hierarchy in the SM. Only the right-handed fermions of the first two generations are charged under the $U(1)_{T3R}$. In addition to the new dark gauge boson, a dark scalar particle acquires a vacuum expectation value (vev) which breaks the $U(1)_{T3R}$ symmetry down to $Z_2$ symmetry and also explains the hierarchy problem. A vev of $\cal O$(GeV) is required to explain the mass parameters of the light flavor sector naturally. The dark matter (DM) particle naturally has mass in the ${\cal O}(1-100)$ MeV range. We discuss the various prospects of the direct detection of the dark matter. The dark matter satisfies the correct thermal relic abundance.

Primary author

Prof. Bhaskar Dutta

Presentation materials