The research aims to investigate the elusive high mass Higgs boson and its decays within the framework of the Beyond Standard Model (BSM) physics. The main goal is to search for Higgs boson decaying to the Z(ll)Z(2v) final state in the mass range of 200GeV/c2 to 3000GeV/c2, using the extensive Run2 dataset from the Compact Muon Solenoid (CMS) experiment of Large Hadron Collider. Motivated by the gaps in our current understanding of particle physics, particularly the limitations of the Standard Model, this research endeavors to shed light on the existence of high mass Higgs bosons and their role in the fundamental interactions of particles. The Z(ll)Z(2ν) final state serves as a distinctive channel for such investigations, as it provides a unique signature that can be discerned amidst the vast data collected by the CMS detector. The proposed methodology involves an in-depth analysis of the CMS Run2 dataset, employing advanced techniques in data reconstruction, simulation, and statistical analysis. Also will explore novel strategies for signal extraction, background estimation, and systematic uncertainty evaluation to enhance the sensitivity of the study. Additionally, the investigation will involve the application of cutting-edge machine learning algorithms to optimize event selection and improve overall analysis efficiency. The anticipated outcomes of this research include the potential discovery of high mass Higgs bosons and the elucidation of their properties, thereby contributing valuable insights into BSM physics. An alternative result could be to rule out the presence of a high mass Higgs boson decaying to Z(ll)Z(2v) final state within the specified mass range.



I will also report on my work for the development and characterization of the MALTA2 pixel detector. The background for this research is the High Luminosity Large Hadron Collider (HL-LHC) project, which seeks to enhance luminosity by tenfold compared to the LHC’s design specifications. The demanding conditions of the HL-LHC environment necessitate the creation of highly sophisticated detector entities capable of withstanding high radiation and a substantial hit rate. Particularly, pixel detectors, positioned closest to the collision point in any experiment, play a crucial role. The silicon pixel detectors should have exceptional timing performance, high spatial resolution, and radiation hardness. The research plan is to characterize the MALTA2 sensor in terms of its radiation hardness using the 180 GeV hadron beam of the Super Proton Synchrotron at CERN. This work has great potential to advance detector technologies, which are crucial to the success of particle physics experiments in the future.