CERN Accelerating science

Article
Report number	SISSA-45-2012-EP ; arXiv:1302.1305 ; SISSA 45-2012-EP
Title	Phenomenology of Minimal Unified Tree Level Gauge Mediation at the LHC
Author(s)	Monaco, Maurizio (INFN, Trieste ; SISSA, Trieste) ; Pierini, Maurizio (CERN) ; Romanino, Andrea (SISSA, Trieste ; INFN, Trieste) ; Spinrath, Martin (INFN, Trieste ; SISSA, Trieste)
Publication	2013
Imprint	07 Feb 2013
Number of pages	41
Note	Comments: 41 pages, 11 figures 41 pages, 11 figures; version accepted for publication in JHEP
In:	JHEP 07 (2013) 078
DOI	10.1007/JHEP07(2013)078
Subject category	Particle Physics - Phenomenology
Abstract	We study the collider phenomenology of the minimal unified version of the supersymmetry breaking scheme called Tree-level Gauge Mediation. We identify a peculiar source of gaugino mass non-universality related to the necessary SU(5)-breaking in the light fermion mass ratios and a gaugino mass sum rule at the GUT scale, 3 M_2 + 2 M_3 = 5 M_1, which represents a smoking gun of this scenario, together with the known tree-level sfermion mass ratio \tilde m_{d^c,l} = \sqrt{2} \tilde m_{q,u^c,e^c}. The boundary conditions of the soft SUSY breaking terms can be parameterised in terms of six relevant parameters only (plus the sign of the \mu-parameter). We analyze the parameter space and define three benchmark points, corresponding to the three possible NLSPs, a bino- or wino-like neutralino or the stau. The LSP is the gravitino as in gauge mediation. For these benchmark points we show possible signatures at the LHC focusing on the Razor variable. We also comment on the Higgs mass.
Copyright/License	arXiv nonexclusive-distrib. 1.0

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