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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:54 |
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Conference: Bucharest University Faculty of Physics 2005 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Background Estimation in e+e- Annihilations with Lepton Flavour Violation.
Authors:
Tatiana Angelescu(1) ,Mihai Ion (1) ,Andrei Radu (2)
Affiliation:
(1) Physics Faculty,Bucharest University
(2) Institute for Spatial Studies,Bucharest-Magurele
E-mail
tatiana@fpca2.fizica.unibuc.ro
Keywords:
Lepton Flavour Violation ,Minimal Supersymmetric Standard Model
Abstract:
We search for lepton flavour violating events in e+e- annihilations using the sample of events obtained with L3 detector at LEP2 for energies between 189 and 209 GeV.
Selection criteria have been established to select two lepton events on a MC sample using SM program KORALZ.In the channel e+e--> tau tau the background is given by the SM predictions with subsequent tau leptonic decay.
The LFV signal can be evaluated in different supersymmetric models.
In any case the contribution of the leptonic decay of taus in the LFV kinematic region is negligeable.
Another way to look at the background for LFV signal was to generate according to SM events in pairs and mix the events of two channels.
This procedure should be based on a large MC sample which has not been available yet.
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