7 papers · 1 filter
Constraints on Axion-Lepton coupling from Big Bang Nucleosynthesis
Diptimoy Ghosh, Divya Sachdeva
In this article, we study the implications of the coupling between Axion-Like-Particles (ALPs) and Leptons to cosmology, in particular, the Big Bang Nucleosynthesis (BBN). We show…
Dark Matter, Muon Anomalous Magnetic Moment and the XENON1T Excess
Debajyoti Choudhury, Suvam Maharana, Divya Sachdeva +1
A very economic scenario with just three extra scalar fields beyond the Standard Model is invoked to explain the muon anomalous magnetic moment, the requisite relic abundance of da…
Discussing 125 GeV and 95 GeV excess in Light Radion Model
Divya Sachdeva, Soumya Sadhukhan
Even if the LHC observations are consistent with the Standard model (SM), current LHC results are not precise enough to rule out the presence of new physics. Taking a contrarian vi…
Model Independent analysis of MeV scale dark matter: II. Implications from colliders and Direct Detection
Debajyoti Choudhury, Divya Sachdeva
Dark matter particles with masses in the sub-GeV range have escaped severe constraints from direct detection experiments such as LUX, PANDAX-II and XENON100 as the corresponding re…
A unified explanation of anomalies, neutrino masses and puzzle
Alakabha Datta, Divya Sachdeva, John Waite
Anomalies in semi-leptonic decays could indicate new physics beyond the standard model(SM). There is an older puzzle in non-leptonic decays. The new particles, lepto…
Model Independent analysis of MeV scale dark matter: I. Cosmological constraints
Debajyoti Choudhury, Divya Sachdeva
Recent results from several direct detection experiments have imposed severe constraints on the multi-GeV mass window for various dark matter (DM) models. However, many of these ex…