This thesis focuses on exploring the explanatory and discovery potential of the four-neutrino and enhanced neutrino magnetic and electric dipole moments hypotheses when
applied to the NOvA/T2K discrepancy and the XENON1T anomaly, respectively. Firstly,
we study the effect of a very light (sub eV) sterile neutrino on the NOvA/T2K anom-...
Dark matter (DM) is one of the most outstanding problems in physics and is a promising hint for physics beyond the Standard Model. Many dark matter detection experiments have been built, with weakly-interacting massive particles (WIMP) as a popular DM candidate. There are also growing interest in light (keV-GeV)...
Since its discovery in 2012 at the Large Hadron Collider (LHC), efforts have beenmade to measure and characterize the properties of the Higgs boson. Among these efforts
have been searches for rare decays of the Higgs predicted by the standard model (SM) of
particle physics. One such decay is the...
The leptonic and inclusive hadronic decay branching fractions of the W boson are studied using 35.9 $fb^{-1}$ of proton-proton collision data collected at $\sqrt{s}=13~TeV$ during the 2016 run of the CMS experiment. Events characterized by the production of pairs of W bosons from \ttbar and \tW processes are selected. Multiple...
We broaden the scope of existing dark matter searches at the Large Hadron Collider (LHC) by considering phenomena such as bound state formation and by utilizing simple extensions of well-studied models in the literature. First, we consider the Mono-X studies at the LHC, where the production of dark matter occurs...