Two-particle angular correlations in the search for new physics at future $e^+e^-$ colliders

• DOI: 10.48550/arxiv.2307.14734
• Publication Date: 2023-01-01
• Authors: Musumeci, E.; Perez-Ramos, R.; Irles, A.; Corredoira, I.; Mitsou, V. A.; Sarkisyan-Grinbau...; Sanchis-Lozano, M...
• Keywords: High Energy Physics - Phenomenology; High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph); FOS: Physical sciences; 7. Clean energy; High Energy Physics - Experiment

Talk presented at the International Workshop on Future Linear Colliders (LCWS 2023), 15-19 May 2023. C23-05-15.3<br/>The analysis of angular particle correlations can yield valuable insights into the initial state of matter in high-energy collisions, thereby potentially revealing the existence of Beyond the Standard Model scenarios such as Hidden Valley (HV). In this study, we focus on a QCD-like hidden sector with relatively massive HV quarks ($\lesssim 100$~GeV) which might enlarge and strengthen azimuthal correlations of final-state SM hadrons. In particular, we study the formation and possible observation of \textit{ridge-like} structures in the angular two-particle correlation function at future $e^+e^-$ colliders, with a much cleaner environment than in hadron colliders, such as the LHC.<br/>