LHC Signature of the Minimal SUGRA Model with a Large Soft Scalar Mass

Details LHC Signature of the Minimal SUGRA Model with a Large Soft Scalar Mass LHC Signature of the Minimal SUGRA Model with a Large Soft Scalar Mass

2000-08-22

arxiv.org/abs/hep-ph/0008228v2

Phys.Lett. B493 (2000) 127-134

Physics

High Energy Physics

High Energy Physics - Phenomenology

Small clarifications added. Final version to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(00)01120-5

Thanks to the focus point phenomenon, it is quite {\it natural} for the minimal SUGRA model to have a large soft scalar mass m_0 > 1 TeV. A distinctive feature of this model is an inverted hierarchy, where the lighter stop has a significantly smaller mass than the other squarks and sleptons. Consequently, the gluino is predicted to decay dominantly via stop exchange into a channel containing 2b and 2W along with the LSP. We exploit this feature to construct a robust signature for this model at the LHC in leptonic channels with 3-4 b-tags and a large missing-E_T.

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