Generation Mixing of Sneutrinos in Heavier Chargino Decay

Details Generation Mixing of Sneutrinos in Heavier Chargino Decay Generation Mixing of Sneutrinos in Heavier Chargino Decay

2005-08-26

arxiv.org/abs/hep-ph/0508269v3

JHEP 0608:054,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, Revtex, 7 figures. v2: For the total width of the heavier chargino, the contribution from the decay into a charged s

Scientific paper

10.1088/1126-6708/2006/08/054

The heavier chargino decay could yield two charged leptons of different generations, owing to generation mixing of sneutrinos. We discuss the possibility of producing $e$ and $\mu$ through this process in near future collider experiments. The analyses are made systematically in the supersymmetric extension of the standard model without assuming a specific scenario for the mixing. Production of the heavier chargino is evaluated in $e^+e^-$ collisions. In the parameter region consistent with nonobservation of the radiative $\mu$ decay, sizable parts lead to a detectable branching ratio for the generation-changing decay of the heavier chargino.

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