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

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Abstract

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 165 pb−1 “0-lepton” search and 35 pb−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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Authors and Affiliations

  1. Department of Physics, Nagoya University, Nagoya, 464-8602, Japan

    Kazuki Sakurai & Kenichi Takayama

  2. Cavendish Laboratory, J.J. Thomson Avenue, Cambridge, CB3 0HE, U.K.

    Kazuki Sakurai

  3. Department of Applied Mathematics and Theoretical Physics, Wilberforce Road, Cambridge, CB3 0WA, U.K.

    Kazuki Sakurai

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  1. Kazuki Sakurai
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  2. Kenichi Takayama
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Correspondence to Kazuki Sakurai.

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ArXiv ePrint: 1106.3794

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Sakurai, K., Takayama, K. Constraint from recent ATLAS results on non-universal sfermion mass models and naturalness. J. High Energ. Phys. 2011, 63 (2011). https://doi.org/10.1007/JHEP12(2011)063

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  • DOI: https://doi.org/10.1007/JHEP12(2011)063

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