000003679 001__ 3679
000003679 005__ 20230704094253.0
000003679 037__ $$aBELLE2-PTHESIS-2023-014
000003679 041__ $$aeng
000003679 100__ $$aMarcela Garcia Hernandez
000003679 245__ $$aSearch for new physics in charged lepton flavor violating processes at the Belle II experiment.
000003679 260__ $$aMexico city$$bCinvestav-IPN$$c2023
000003679 300__ $$a137
000003679 500__ $$aPresented on 12 06 2023
000003679 502__ $$aPhD$$bMexico city, Cinvestav-IPN$$c2023
000003679 520__ $$aIn particle physics, charged Lepton Flavor Violating (cLFV) processes have not been observed. If they were observed, they would necessarily lead to new physics scenarios. The τ lepton is the heaviest lepton in the Standard Model of particle physics. It is the only lepton heavy enough to decay into leptons or hadrons; moreover, its production mechanisms are well-understood. Thus, τ lepton physics is extremely convenient to search for flavor violation. The Belle II experiment is expected to achieve the world’s largest τ sample in the coming years. This will allow us to search for more than 50 charged lepton flavor violating processes in the τ lepton sector with high precision. Within the Belle II experiment, we work on the search of the cLFV τ^{±} → l^{±} + α decay, where l is either an electron or a muon, and α is an invisible spin-0 boson. In addition, we review the τ^{±} → l^{±} + γ decay, which is a golden mode to search for lepton flavor violation since it has the largest branching ratio in new physics scenarios.
000003679 700__ $$aIvan Heredia De La Cruz$$edir.
000003679 8560_ $$fmgarciah@post.kek.jp
000003679 8564_ $$uhttps://docs.belle2.org/record/3679/files/BELLE2-PTHESIS-2023-014.pdf
000003679 980__ $$aTHESIS