UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-22 1:23

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Conference: Bucharest University Faculty of Physics 2004 Meeting


Section: Nuclear and Elementary Particles Physics


Title:
Lepton Flavour Violation (LFV) upper limits for LEP2 experiments


Authors:
T.Angelescu1, Gh.Dumitrescu1, M.Ion1, A.Mihul1, A. Radu2


Affiliation:
1.Bucharest University, Physics Faculty, Department for Atomic and Nuclear Physics

2.Institute of Space Sciences, Bucharest-Magurele


E-mail


Keywords:
Lepton Flavour Violation


Abstract:
LFV is predicted by many models beyond the Standard Model(SM). Though the SM has been successful in accounting for essentially all the data from the laboratory experiments to date, physicists are looking for phenomena beyond the SM. One of these is the lepton flavour violation in electroweak interactions. LEP experiments have established an upper limit for neutrinoless m and t decays and two fermion production at Z0 energy. Data obtained at LEP2 are analysed for establishing upper limits at higher energies. The forthcoming results are exciting because there are models which predict LFV at a level attained by LEP and LHC experiment’s sensitivities. A review of the results both theoretical and experimental is presented along with the cosmological implications. Using the L3 collaboration Monte Carlo simulations at 189 – 209 GeV we tried a prediction for the upper limit for LFV in the e+ e- > t+ t- channel. Selection criteria for taus are presented and selection efficiency is computed.