Study of loop induced Higgs decays in the major types of 2HDM

Panghal, Snehit (2023) Study of loop induced Higgs decays in the major types of 2HDM. Masters thesis, Indian Institute of Science Education and Research Kolkata.

Text (MS dissertation of Snehit Panghal (18MS070)) Thesis_18MS070.pdf - Submitted Version Restricted to Repository staff only Download (3MB)

Abstract

The Loop induced Higgs decays are essential in searching for and constraining new physics predictions based on extensions of Standard Model(SM). The aim of this project is to reproduce the analytical results of the partial decay width of all the major decay modes for all neutral higgs bosons in the major types of Two-Higgs- Doublet Model(2HDM) with a particular focus on loop induced Higgs decay to γγ and Zγ. Chapter 1 gives the motivation for studying 2HDM. Chapter 2 introduces the theory of 2HDM and the necessary theoretical and experimental constraints on the model which provides the suitable Lagrangian. The detailed calculations of the major partial decay widths of the neutral Higgs bosons are performed in Chapter 3. The results of these decay widths are used to constrain the 2HDM parameter space and study its implications on the higgs decay to γγ and Zγ in Chapter 4.

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