Sunday, August 4, 2013

1308.0297 (Matthew Cahill-Rowley et al.)

Constraints on Higgs Properties and SUSY Partners in the pMSSM    [PDF]

Matthew Cahill-Rowley, JoAnne Hewett, Ahmed Ismail, Tom Rizzo
Direct searches for superpartners and precision measurements of the properties of the $\sim 126$ GeV Higgs boson both lead to important interdependent constraints on the underlying parameter space of the MSSM. The 19/20-parameter p(henomenological)MSSM offers a very flexible framework for the study of a wide variety of both Higgs and SUSY phenomena at the LHC. Within this scenario we will address the following questions: `What will potentially null searches for SUSY at the LHC tell us about the possible properties of the Higgs boson?' and, conversely, `What do precision measurements of the properties of the Higgs tell us about the possible properties of the various superpartners?' Clearly the answers to such questions will be functions of both the collision energy of the LHC as well as the accumulated integrated luminosity. We will address these questions employing a large set of pMSSM models having neutralino LSPs and using the ATLAS SUSY analyses at the 7/8 LHC and planned analyses at the 14 TeV LHC and the ILC. Except for theoretical uncertainties that remain to be accounted for in the ratios of SUSY and SM couplings, we demonstrate that Higgs coupling measurements, particularly at ILC500, will be sensitive to regions of the pMSSM model space that is not accessible to direct SUSY searches.
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