4 papers
Probing Inelastic Dark Matter via Cosmic-Ray Upscattering in NGC 1068
Eung Jin Chun, Sanjoy Mandal, Abhishek Roy
We study constraints on sub-GeV inelastic dark matter (iDM) from cosmic-ray (CR) cooling in the active galactic nucleus (AGN) NGC 1068. In dense dark matter (DM) spikes surrounding…
Spontaneous Cogensis by QCD axion in Type I Seesaw
Eung Jin Chun
We propose a generic axion--driven cogenesis scenario in which both the baryon asymmetry and dark matter abundance originate from the kinetic misalignment. The framework unifies th…
Cogenesis by a sliding pNGB with symmetry non-restoration
Eung Jin Chun, Suruj Jyoti Das, Minxi He +2
We demonstrate that a pseudo-Nambu-Goldstone boson (pNGB) with an initial misalignment angle can drive successful spontaneous baryogenesis and serve as a dark matter (DM) candidate…
Phenomenology of Dirac neutrino EFTs up to dimension six
Anirban Biswas, Eung Jin Chun, Sanjoy Mandal +1
The gauge-singlet right-handed neutrinos would be essential to explain the tiny masses of active neutrinos. We consider the effective field theory of the Standard Model extended wi…