4 papers
Sub-TeV Singlino Dark Matter in light from Sagittarius A and LUX-ZEPLIN Nuclear-Recoil Event
Utpal Chattopadhyay, Debottam Das, Rahul Puri +1
We investigate the impact of a dark matter density spike surrounding the Milky Way's supermassive black hole (SMBH) on the detectability of Singlino-dominated neutralino dark matte…
Diffuse Supernova Neutrinos with Secret Neutrino Interactions
Praveen Bharadwaj, Utpal Chattopadhyay, Dilip Kumar Ghosh +1
The Diffuse Supernova Neutrino Background (DSNB), an isotropic flux arising from the cumulative neutrino emission of all stellar core-collapse events throughout cosmic history, is…
Constraining lepton flavor violating SMEFT operators from low-energy cLFV processes
Utpal Chattopadhyay, Debottam Das, Rahul Puri +1
Charged lepton flavour-violating (cLFV) processes, which are definite proof of new physics beyond the Standard Model, have remained elusive experimentally till now. Effective Field…
Constraints on lepton flavor universal and non-universal New Physics in decays: a global SMEFT survey
Md Isha Ali, Utpal Chattopadhyay, Dilip Kumar Ghosh +1
The flavor-changing neutral current semileptonic decays of mesons provide an excellent platform for indirectly probing New Physics (NP) beyond the Standard Model (SM). Recent m…