Eur. Phys. J. C (2012) 72: 1847
https://doi.org/10.1140/epjc/s10052-011-1847-3

Regular Article - Theoretical Physics

Implications of LHC searches on SUSY particle spectra

The pMSSM parameter space with neutralino dark matter

¹ Université de Lyon, Université Lyon 1, CNRS/IN2P3, UMR5822 IPNL, 69622, Villeurbanne Cedex, France
² CERN, 1211, Geneva 23, Switzerland
³ Observatoire de Lyon, CNRS, UMR5574 CRAL, Ecole Normale Supérieure de Lyon, 69561, Saint-Genis Laval Cedex, France
⁴ Santa Cruz Institute of Particle Physics, University of California, Santa Cruz, CA, 95064, USA
⁵ Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
⁶ CNRS/IN2P3, LPC, Clermont Université, Université Blaise Pascal, BP 10448, 63000, Clermont-Ferrand, France

^* e-mail: mahmoudi@in2p3.fr

Received: 17 October 2011
Revised: 21 November 2011
Published online: 3 January 2012

Abstract

We study the implications of LHC searches on SUSY particle spectra using flat scans of the 19-parameter pMSSM phase space. We apply constraints from flavour physics, g _μ −2, dark matter and earlier LEP and Tevatron searches. The sensitivity of the LHC SUSY searches with jets, leptons and missing energy is assessed by reproducing with fast simulation the recent CMS analyses after validation on benchmark points. We present results in terms of the fraction of pMSSM points compatible with all the constraints which are excluded by the LHC searches with 1 fb⁻¹ and 15 fb⁻¹ as a function of the mass of strongly and weakly interacting SUSY particles. We also discuss the suppression of Higgs production cross sections for the MSSM points not excluded and contrast the region of parameter space tested by the LHC data with the constraints from dark matter direct detection experiments.