Speaker
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.
| Track type | Gravitational waves |
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