Constraint from recent ATLAS results on non-universal sfermion mass models and naturalness

Details Constraint from recent ATLAS results on non-universal sfermion mass models and naturalness Constraint from recent ATLAS results on non-universal sfermion mass models and naturalness

2011-06-20

arxiv.org/abs/1106.3794v5

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 7 figures, 2 tables

Scientific paper

We investigate the impact of recent direct supersymmetry (SUSY) searches on a non-universal sfermion mass scenario focusing on naturalness. One of the advantages of this scenario is that the non-universality between third generation and first two generation sfermion masses can relax the tension between naturalness and constraints from flavour and CP violating observables. In the parameter region, where various phenomenological constraints are satisfied, the constraints to this scenario from ATLAS 165pb-1 "0-lepton" search and 35pb-1 "b-jet" search are much weaker than those to the constrained minimal SUSY standard model, because of differences in the main SUSY production processes and the main decay chains. Naturalness can be easily achieved in this scenario in accord with the current direct SUSY searches. An additional dedicated analysis may be needed to discover/exclude this scenario.

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