11 papers
Thermal Leptogenesis in the BNT Model of Neutrino Mass
P. S. Bhupal Dev, Srubabati Goswami, Debashis Pachhar +1
We investigate neutrino mass and thermal leptogenesis in the Babu-Nandi-Tavartkiladze (BNT) model featuring a scalar quadruplet () and a pair of vector-like fermion triplets ($…
New Supernova Constraints on Neutrinophilic Dark Sector - Vector Mediators
Christopher V. Cappiello, P. S. Bhupal Dev, Amol V. Patwardhan
Supernova cooling has long been used to constrain physics beyond the Standard Model, typically involving new mediators or dark matter (DM) particles that couple to nucleons or elec…
Minimal dark origin of a massless Dirac neutrino
P. S. Bhupal Dev, Julia Gehrlein, Amartya Sengupta +1
We propose a gauge-symmetry origin of a rank-two Dirac neutrino mass matrix that enforces one exactly massless neutrino, while being consistent with the oscillation data, as well a…
Primordial Magnetogenesis and Gravitational Waves from ALP-assisted Phase Transition
Pankaj Borah, P. S. Bhupal Dev, Anish Ghoshal
Sufficiently strong first-order phase transitions (FOPTs) in the early Universe can simultaneously produce an observable stochastic gravitational wave background (SGWB) and a large…
Exploring Scalar Leptoquarks at Muon Collider via Indirect Signatures and Right-Handed Neutrino-Assisted Decays
Subham Saha, Arvind Bhaskar, P. S. Bhupal Dev +1
Scalar leptoquarks (sLQs) appear in a wide range of ultraviolet-motivated extensions of the Standard Model and provide a natural link between the quark and lepton sectors. In this…
Dark-Matter-Enhanced Probe of Relic Neutrino Clustering
Writasree Maitra, Anna M. Suliga, Vedran Brdar +1
We propose heavy decaying dark matter (DM) as a new probe of the cosmic neutrino background (CB). Heavy DM, with mass GeV, decaying into neutrinos can be a new s…