Right-chiral sneutrinos and long-lived staus: event characteristics at the Large Hadron Collider

Details Right-chiral sneutrinos and long-lived staus: event characteristics at the Large Hadron Collider Right-chiral sneutrinos and long-lived staus: event characteristics at the Large Hadron Collider

2007-01-09

arxiv.org/abs/hep-ph/0701063v2

Phys.Rev.D75:075007,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex2E, 18 pages, 8 eps figures included (To appear in Phys.Rev. D)

Scientific paper

10.1103/PhysRevD.75.075007

We investigate the signals of a supersymmetric scenario where the lighter tau-sneutrino is the lightest supersymmetric particle, while the lighter stau-state is the next lightest. We confirm that such a scenario can be motivated within the framework of minimal supergravity, with just the addition of a right-chiral neutrino superfield. Such a spectrum leads to rather unusual signals of supersymmetry, showing stable tracks of the stau in the muon chambers. We have studied two types of signals, namely, (a) two or more hard jets and two stau tracks, and (b) hard jets with two muons and two stau tracks. We demonstrate that the stau tracks can be distinguished from the muonic ones through proper kinematic cuts which also enable one to remove all standard model backgrounds.

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