8 papers
Majoron Dark Matter, High-Scale Seesaw, and Leptogenesis
Brian Batell, Arnab Dasgupta, Swapnil Dutta +1
We study the cosmology and observational probes of majoron dark matter in a high-scale seesaw framework with spontaneously broken lepton number. Right-handed neutrinos naturally ge…
Reviving WIMP dark matter with temperature-dependent couplings
Debasish Borah, Arnab Dasgupta, Tong Arthur Wu
The persistent null results at dark matter (DM) direct-detection experiments have pushed the popular weakly interacting massive particle (WIMP) DM to tight corners. Generic WIMP mo…
Collider probes of baryogenesis with maximal CP asymmetry
Debasish Borah, Kun Cheng, Arnab Dasgupta +2
We propose a novel collider probe of baryogenesis at TeV scale by measuring decay asymmetries into particle and anti-particle final states. Motivated by the idea of Dirac leptogene…
Leptogenesis from Dark Matter Coannihilation
Simran Arora, Debasish Borah, Arnab Dasgupta +2
We propose a minimal extension of the type-I seesaw model to realise leptogenesis from the co-annihilation of dark sector particles. The type-I seesaw model is extended with a sing…
ALPy Cogenesis
Disha Bandyopadhyay, Debasish Borah, Arnab Dasgupta
We propose a novel cogenesis scenario by utilising the two-body decay of heavy right-handed neutrino (RHN) via an effective operator involving an axion-like particle (ALP) dark mat…
Gravitational Wave Production and Baryogenesis in a Simple Left-Right model
Arnab Dasgupta, Matthew Knauss, Marc Sher
The left-right model with the simplest Higgs structure has a doublet , a doublet , and a singlet that couples to the doublets as $Ï(|H_L|^2-|H_R…