We study the minimal type-III seesaw model to explain the origin of the
non-zero neutrino masses and mixing. We show that the naturalness arguments
and the bounds from lepton flavor violating decay (μ → eγ) provide very
stringent bounds on the model along with the constraints on the stability
of the electroweak vacuum up to High energy scale. We perform a detailed
analysis of the model...
We explore a two component dark matter model with a fermion and a scalar. In this scenario the Standard Model (SM) is extended by a fermion, a scalar and an additional pseudo scalar. The fermionic component is assumed to have a global U(1)$_{\rm DM}$ and interacts with the pseudo scalar via Yukawa interaction while a $ℤ_2$ symmetry is imposed on the other component – the scalar. These...
Recently, some unexpected phenomena in various B meson decays are being observed in several experiments. Few of the observables are branching ratio of $B_s→φμ^+ μ^-$ decay, angular observable $P_5$' in $B→K^* μ^+ μ^-$ decay, lepton flavour non-universality parameters $R_{K(^*)}$,$R_{D(^*)}$ etc. The fact that these observables show significant deviation around 3σ from their standard model...
Interpretation of data from MiniBooNE experiment at Fermilab and liquid scintillator neutrino detector (LSND) with a two-neutrino oscillation model, i.e, muon neutrino to electron neutrino, shows that, MiniBooNE experiment confirms the fourth neutrino flavour. These flavour’s properties and behaviours raise a lot of opportunities and challenges to understand the universe. In this present work,...
