RT Dissertation/Thesis
T1 Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
A1 Brea Rodríguez, Alexandre
K1 LHCb
K1 Semileptonic
K1 Hyperons
K1 LFU
K1 Strange
AB Theoretical studies have demonstrated that SemileptonicHyperon Decays (SHD) can be sensitive to Beyond theStandard Model dynamics that break leptonic flavouruniversality (LFU). The LFU test observable defined as the ratiobetween muon and electron modes is sensitive to non standardscalar and tensor contributions. Moreover there is aprecise SM theoretical prediction.Λ -> p μ ν was proposed as one of the most promising SHD tobe studied at LHCb, due to its high acceptance efficiencyand abundance in LHCb events. In addition, the electron modehas already been measured precisely and animprovement in the measurement of the BR directly translatesinto tighter bounds in LFU in s-u quark transitions.In this thesis is presented the blinded measurement of thebranching fraction and its consequences.
YR 2024
FD 2024
LK http://hdl.handle.net/10347/32902
UL http://hdl.handle.net/10347/32902
LA eng
DS Minerva
RD 24 abr 2026