MC production of the Higgs decay to Photons and Dark Photons with ATLAS Detector

Our current understanding of the building blocks of matter and elementary particles is de- scribed by the standard model (SM) of particle physics. The standard model gives infor- mation about the interactions between those particles. Hence, formation of matter and ev- erything that surrounds us. The standard model has been very successful in describing the theory and interactions of elementary particle at the weak scale. The SM model’s descrip- tion of particles interactions is so accurate, where most of the predictions have been tested and recorded at collider experiments. The SM does explain many properties such as the charge, spin and mass of its classes as a substructure of quantum field theory. Yet, it fails to describe major phenomena such as the composition of dark matter and its nature, anti-matter and matter, unification of all forces including gravity and further more [1]. The experimental evidence of what breaks the electroweak symmetry was not found before July of 2012. The boson was discovered by both the ATLAS and CMS detectors of the Large hadron collider [2]. The Higgs boson discovery completed the standard model and built a solid picture of the elementary particles and their interactions. For further exploration of the SM, physicists suggest working on models that could be tested by computational forms such as simulation. In this project, the Higgs decay is studied rely- ing on the production signal and background data using a Monte Carlo (MC) simulation.