Theoretical and phenomenological consequences of active and sterile neutrino within Beyond Standard Model framework

Abstract

This thesis address theoretical and phenomenological aspects of active and sterile mixing pattern within minimal extended seesaw frameworks. It consists of six chapters, where chapters one and six are dedicated to introduction and conclusion chapters, respectively. In chapter two, we study active-sterile phenomenology with a single generation of sterile neutrino ($m_S\sim \mathcal{O}$(eV)) along with the three active neutrinos. Three independent cases for sterile mass matrices are studied in both normal and inverted hierarchy mass ordering. Chapter three is an extension of the previous chapter. The neutrino mass generation and baryogenesis {\it via} thermal leptogenesis are studied in the fermionic sector. On the other hand, an extended multi Higgs doublet model is studied in the scalar sector. Among the three Higgs doublet, one of them does not acquire any vacuum expectation value (VEV); hence, it behaves as an inert Higgs. The lightest component of this behaves as a viable dark matter candidate. Within MES, sterile mass can be stressed up to the $keV$ scale. In the fourth chapter, we studied various phenomenologies considering sterile neutrino mass in the $keV$ range. This $keV$ scaled sterile neutrino also plays the role of dark matter candidate in our study. The fifth chapter is dedicated to the texture-zero neutrino dark matter model. We study active-sterile mixing, baryogenesis $via$ resonant leptogenesis and $0\nu \beta \beta$ in the fermion sector. While, in the scalar sector, the complex scalar flavon that gives rise to sterile mass takes part in dark matter study. The imaginary component of that scalar flavon is behaving as a viable dark matter candidate.

PhD Thesis

References in corpus (41)

• Observation of electron-antineutrino disappearance at Daya Bay
• Dark Matter Results from 225 Live Days of XENON100 Data
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• The Reactor Antineutrino Anomaly
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• The Dawn of FIMP Dark Matter: A Review of Models and Constraints
• Non-perturbative Effect on Thermal Relic Abundance of Dark Matter
• Light Sterile Neutrinos: A White Paper
• Solar neutrino measurements in Super-Kamiokande-II
• Statistical Significance of the Gallium Anomaly
• Low energy effects of neutrino masses
• Can sterile neutrinos be the dark matter?
• Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
• Review of LHC Dark Matter Searches
• Cosmology seeking friendship with sterile neutrinos
• Can sterile neutrinos be ruled out as warm dark matter candidates?
• Light Sterile Neutrinos: Models and Phenomenology
• Searches for invisible decays of the Higgs boson in pp collisions at sqrt(s) = 7, 8, and 13 TeV
• Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
• A Simplest A4 Model for Tri-Bimaximal Neutrino Mixing
• New Constraints on Sterile Neutrino Dark Matter from $NuSTAR$ M31 Observations
• Constraints from Ly-$\alpha$ forests on non-thermal dark matter including resonantly-produced sterile neutrinos
• Determining the neutrino mass with Cyclotron Radiation Emission Spectroscopy - Project 8
• A new viable region of the inert doublet model
• XENON100 Dark Matter Results from a Combination of 477 Live Days
• Search for a Light Sterile Neutrino at Daya Bay
• Sensitivity of Next-Generation Tritium Beta-Decay Experiments for keV-Scale Sterile Neutrinos
• Lepton Flavour Violation and theta(13) in Minimal Resonant Leptogenesis
• Discrete symmetries in the three-Higgs-doublet model
• On Resonant Leptogenesis
• Analysis of an extended scalar sector with $S_3$ symmetry
• CP violation and Leptogenesis in models with Minimal Lepton Flavour Violation
• Signatures of Extra Dimensional Sterile Neutrinos
• Sterile neutrinos and right-handed currents in KATRIN
• Three generations of Higgses and the cyclic groups
• Remark on the minimal seesaw model and leptogenesis with tri/bi-maximal mixing
• Proposal for an Extended Run of T2K to $20\times 10^{21}$ POT
• Majorana neutrino mass matrices with three texture zeros and the sterile neutrino
• Discriminating Majorana Neutrino Textures in the light of Baryon Asymmetry
• Texture zeros of low-energy Majorana neutrino mass matrix in 3+1 scheme
• Exploring Extensions of the Scalar Sector of the Standard Model