Production of vector leptoquarks at the LHC in association with a jet

This dissertation presents a phenomenological study of vector leptoquark production under LHC conditions. The study considered a spin-1 leptoquark of charge +2/3 e coupling mainly to third-generation fermions. This choice is motivated by models that can explain the recently observed anomalies in B-meson decays. This work was carried out with high regard for constraints imposed by available low-energy observables. Using these constraints, signals for leptoquark production in association with a jet were simulated and events presenting a VBF-like process were selected. Background processes were also generated and their kinematic and topological distributions were compared to the signal samples. A logistic regression algorithm was trained and tested for classifying events as signal or background. With the classification by the algorithm, the search at the LHC for vector leptoquarks is feasible for leptoquark masses between 0.5 and 1.5 TeV and at high luminosities (between 1500 and 3000 fb^{-1}).

• Autores: Dorado Toro, Daniel Fernando
• Tipo de recurso: Trabajo de grado de pregrado
• Fecha de publicación: 2022
• Institución: Universidad de los Andes
• Repositorio: Séneca: repositorio Uniandes
• Idioma: eng
• OAI Identifier: oai:repositorio.uniandes.edu.co:1992/69121
• Acceso en línea: http://hdl.handle.net/1992/69121
• Palabra clave: Large Hadron Collider; CMS; Leptoquarks; High energy physics; Física de altas energías; Fenomenología; Física
• Rights: openAccess
• License: Attribution-NonCommercial-NoDerivatives 4.0 Internacional