Initiation to the Higgs to Dark Photon analysis framework

In Physics, the Standard Model (SM) is a theory that aims to understand fundamental particles and how they interact. The model is successful in multiple aspects as it helps in understanding three of the four fundamental forces (Electromagnetic, Strong Force, Weak Force). However, it fails to properly explain gravity. Furthermore, the SM does not account for dark matter, which makes up most of the universe (85%). The Large Hadron Collider (LHC) at CERN aims to test the SM and develop a better understanding of what the universe is made of. In 2012, the Higgs Boson, was detected at the LHC, providing a leap in particle physics. The LHC provides a way to study dark matter through the decay of the Higgs Boson. Since dark matter particles cannot be detected by the detectors, the missing energy in collisions could be key to observing these particles [1,2]. In this report a small description of the LHC and ATLAS detector (Section 2) is given along with a description of the framework setup of the Higgs to Dark Photon Analysis (section 3). Finally, a conclusion of the results is given (Section 4).