Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-06-09
JHEP 0705:059,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
30 pages, 12 figures. Discussion extended to include the efficiency of identifying long-lived staus, references added. To appe
Scientific paper
10.1088/1126-6708/2007/05/059
We analyze the prospects of observing lepton flavour violation in future e-e- and e+e- linear colliders in scenarios where the gravitino is the lightest supersymmetric particle, and the stau is the next-to-lightest supersymmetric particle. The signals consist of multilepton final states with two heavily ionizing charged tracks produced by the long-lived staus. The Standard Model backgrounds are very small and the supersymmetric backgrounds can be kept well under control by the use of suitable kinematical cuts. We discuss in particular the potential of the projected International Linear Collider to discover lepton flavour violation in this class of scenarios, and we compare the estimated sensitivity with the constraints stemming from the non-observation of rare decays.
Ibarra Alejandro
Roy Sourov
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