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

The Dark Hyper-Charge Symmetry

15 Oct 2024, 14:15

15m

Seminar Room 2, Convention Center (IIT Hyderabad )

Parallel talk Parallel - Dark Matter

Speaker

HEMANT KUMAR PRAJAPATI (INDIAN INSTITUTE OF SCIENCE, EDUCATION & RESEARCH- BHOPAL (IISER BHOPAL))

Description

$U(1)$ extension of the Standard Model is well motivated, where the charges of SM fermions are fixed by gauge anomaly cancellations and Yukawa interactions. While the literature extensively discusses anomaly cancellation solutions in which SM fermions are vector-like under new symmetry, allowing the Yukawa structure to remain invariant, chiral solutions in which SM fermions are chiral under new symmetry are not well explored. In this work, we venture into these relatively unexplored chiral solutions, presenting a comprehensive set of solutions for gauge anomaly cancellation through the inclusion of three right-handed dark fermions. We will focus on a particularly intriguing chiral solution and demonstrate, in a model-independent manner using only the $Z^{\prime }$ interaction channel, that the lightest dark fermion, denoted as $F_1$, is a viable Dark Matter candidate, and it can meet all current Dark Matter constraints with a mass of $M_{F_1}\gtrsim 150$ GeV.

Presentation materials

PPC_2024_Hemant.pdf