Freezing In with Lepton Flavored Fermions

26 Aug 2021, 14:30
20m
ZR4

ZR4

Dark Matter and Astroparticle Physics Dark Matter and Astroparticle Physics

Speaker

Shiuli Chatterjee (Indian Institute of Science)

Description

Dark, chiral fermions carrying lepton flavor quantum numbers are natural candidates for freeze-in. Small couplings with the Standard Model fermions of the order of lepton Yukawas are ‘automatic’ in the limit of Minimal Flavor Violation. In the absence of total lepton number violating interactions, particles with certain representations under the flavor group remain absolutely stable. For masses in the GeV-TeV range, the simplest model with three flavors, leads to signals at future direct detection experiments like DARWIN. Interestingly, freeze-in with a smaller flavor group such as SU (2) is already being probed by XENON1T.

Primary author

Shiuli Chatterjee (Indian Institute of Science)

Co-authors

Giancarlo D'Ambrosio Dr Ranjan Laha (Indian Institute of Science) Sudhir Kumar Vempati (Centre for High Energy Physics, Indian Institute of Science)

Presentation materials