Discriminating Minimal SUGRA and Minimal Gauge Mediation Models at the Early LHC

Details Discriminating Minimal SUGRA and Minimal Gauge Mediation Models at the Early LHC Discriminating Minimal SUGRA and Minimal Gauge Mediation Models at the Early LHC

2012-02-16

arxiv.org/abs/1202.3584v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pages, 3 figures, captions improved, typos corrected, appendix added, version published in JHEP

Scientific paper

Among various supersymmetric (SUSY) standard models, the gravity mediation model with a neutralino LSP and the gauge mediation model with a very light gravitino are attractive from the cosmological view point. These models have different scales of SUSY breaking and their underlying physics in high energy is quite different. However, if the sparticles' decay into the gravitino is prompt in the latter case, their collider signatures can be similar: multiple jets and missing transverse momentum. In this paper, we study the discrimination between these models in minimal cases at the LHC based on the method using the significance variables in several different modes and show the discrimination is possible at a very early stage after the discovery.

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