The research in elementary particle physics conducted at CERN significantly contributes to our understanding of the world around us. In the Large Hadron Collider (LHC), high-energy protons are collided, and the newly formed particles provide information about fundamental laws of nature and the structure of the Universe. The LHC accelerates protons to nearly the speed of light, and they are smashed together at four collision points, one of which is the Compact Muon Solenoid (CMS) detector. Experiments conducted in the CMS detector not only search for new particles but also refine existing knowledge. One important process under investigation is the Drell-Yan process, first described in 1970 by physicists Sidney David Drell and Tung-Mow Yan [1]. This remains an active, although well-studied, area of research that helps refine the structure of hadrons and parton distribution functions, which are crucial theoretical tools for modeling particle collisions and testing Standard Model predictions. The process describes the creation of a lepton pair from the annihilation of a high-energy quark and antiquark. This study focuses on the Drell-Yan process, where a pair of muons is created via a Z boson.
During this study, statistical properties of the muon pair and the originating particle were calculated, including transverse momentum, energy, pseudorapidity, azimuthal angle, and mass. The obtained results were visualized using histograms. The data for this study was taken from the CERN open data portal. The data originates from experiments conducted in 2016 but was only made publicly available in 2024. Calculations were performed using all 13 TeV proton collision events that contained at least two high-energy muons. More details about the study will be provided during the presentation. By providing open access to experimental data, CERN allows non-staff members to explore particle physics and enables researchers and students worldwide to contribute to data analysis and promote science.