The thesis delves into different models of Weakly Interacting Massive Particle (WIMP) dark matter, highlighting their phenomenological implications and strict constraints from direct detection experiments. It discusses pseudo-scalar properties as mediators and candidates for dark matter, particularly in chapters 2 and 4. Chapter 2 examines an ALP portal fermion dark matter model featuring right-handed neutrinos and a pseudo-scalar mediator, while chapter 3 introduces a two-component dark matter model in a U(1)X extension of the Standard Model. These analyses aim to provide insight into potential dark matter candidates and their interactions.
This thesis integrates Weakly Interacting Massive Particle (WIMP) dark matter models, emphasizing their experimental constraints and exploring pseudo-scalar properties as mediators and candidates.
In chapters 2 and 4, pseudo-scalar models illustrate the evasion of direct detection bounds, adding depth to our understanding of dark matter candidates.
Chapter 3 discusses a two-component dark matter model and its phenomenological aspects, focusing on interactions within a generalized U(1)X framework to enrich the dark matter narrative.
The ALP portal fermion dark matter model, detailed in chapter 2, leverages neutrino mixing and Type I seesaw mechanism to propose a stable dark matter candidate.
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