PPC 2024: XVII International Conference on Interconnections between Particle Physics and Cosmology

Constraints on leptophobic models and dark matter from gravitational waves to colliders

16 Oct 2024, 14:30

15m

Auditorium 1, Convention Center (IIT Hyderabad)

Parallel talk Parallel - ASP & GW

Speaker

Ms Taramati Guruwani (IIT Bhilai)

Description

A minimally extended version of the Standard Model where baryon number is promoted as a gauged $U(1{)}_B$ symmetry can be made anomaly-free by adding a set of vector-like fermions. Such a scenario can evade the spin-dependent direct detection bounds on vector-like fermions. Additionally, the lightest component of the exotic fermion sector behaves as a viable dark matter candidate. We show that the spontaneous breaking of $U(1{)}_B$ symmetry can produce gravitational waves via bubble dynamics resulting from a first-order phase transition, which can be detected in future gravitational wave experiments like LISA and DECIGO. Such gravitational wave signatures can be used as a probe to constrain the model in future observations. We show that dark matter relic density can have one-to-one correspondence with the frequency of the gravitational waves.

Presentation materials

TalkPPC_Taramati.pdf