3 papers
hep-ph2026
Impostor Among s: Dark Radiation Masquerading as Self-Interacting Neutrinos
Anirban Das, P. S. Bhupal Dev, Christina Gao +2
Multiple cosmological observations hint at neutrino self-interactions beyond the Standard Model, yet such interactions face severe constraints from terrestrial experiments. We reso…
astro-ph.CO2025
Cosmological Constraints on Secluded Dark Radiation
Jae Hyeok Chang, Peizhi Du, Subhajit Ghosh +1
Dark radiation (DR) is ubiquitous in physics beyond the Standard Model (SM), and its interactions with the SM and dark matter (DM) lead to a variety of interesting effects on cosmo…
astro-ph.CO2025
Joint 21-cm and CMB Forecasts for Constraining Self-Interacting Massive Neutrinos
Sarah Libanore, Subhajit Ghosh, Ely D. Kovetz +2
Self-interacting neutrinos provide an intriguing extension to the Standard Model, motivated by both particle physics and cosmology. Recent cosmological analyses suggest a bimodal p…