PT Journal
AU Bhattacharya, S
   Mondal, N
   Roshan, R
   Vatsyayan, D
TI Leptogenesis, dark matter and gravitational waves from discrete symmetry breaking
SO Journal of Cosmology and Astroparticle Physics
JI J. Cosmol. Astropart. Phys.
PY 2024
BP 029
EP 25pp
VL 06
IS 6
DI 10.1088/1475-7516/2024/06/029
LA English
DE leptogenesis; dark matter theory; gravitational waves / theory
AB We analyse a model that connects the neutrino sector and the dark sector of the universe via a mediator 41., stabilised by a discrete Z4 symmetry that breaks to a remnant Z2 upon 41. acquiring a non -zero vacuum expectation value (v phi). The model accounts for the observed baryon asymmetry of the universe via additional contributions to the canonical Type -I leptogenesis. The Z4 symmetry breaking scale (v phi) in the model not only establishes a connection between the neutrino sector and the dark sector, but could also lead to gravitational wave signals that are within the reach of current and future experimental sensitivities.
ER