5 papers
Infrared Lines from Sterile-Neutrino Transition Magnetic Moments at JWST
Hriditi Howlader, Alekha C. Nayak, Tripurari Srivastava
We investigate infrared line signatures from radiatively decaying sterile-neutrino dark matter using publicly available JWST/NIRSpec IFU blank-sky observations. The main signal con…
Probing TeV-Scale Inverse-Seesaw Leptogenesis and Majorana Dark Matter in Models at Multi-TeV Muon Colliders
Xin-Qiang Li, Himadri Roy, Tripurari Srivastava +2
We investigate a predictive and testable framework in which dark matter (DM), heavy-neutrino dynamics, and the BAU originate from correlated interactions within a local $U(1)_{B-L}…
Solving Cosmological Puzzles using Finite Temperature SMEFT
Debajyoti Choudhury, Jaydeb Das, Tripurari Srivastava
We study a minimal framework that naturally yields viable Dark Matter, a strong first-order electroweak phase transition and low-scale resonant leptogenesis. Augmenting the Standar…
Constraining self-interacting ultrahigh-energy muon neutrinos by cosmic microwave background spectral distortion
Pravin Kumar Natwariya, Shibsankar Si, Alekha C. Nayak +1
The neutrino telescopes have firmly established the existence of ultrahigh-energy neutrinos. Observations of these neutrinos offer a unique probe of neutrino self-interactions. Thi…
Bounds on decaying sterile neutrinos via magnetic dipole moment from COB intensity
Hriditi Howlader, Vivekanand Mohapatra, Alekha C. Nayak +1
A recent observation by Long Range Reconnaissance Imager (LORRI) mounted on NASA's New Horizons yielded the most accurate measurement of the cosmic optical background (COB). The re…