The pMSSM10 after LHC run 1.

Area of Science:

• High Energy Physics
• Supersymmetry
• Cosmology

Background:

• The Minimal Supersymmetric Standard Model (MSSM) is a leading candidate for physics beyond the Standard Model.
• Constraining the vast parameter space of supersymmetric models is crucial for experimental searches.
• Previous analyses often focused on simplified models, limiting their applicability.

Purpose of the Study:

• To perform a frequentist analysis of the pMSSM10 parameter space.
• To confront the pMSSM10 with all relevant experimental constraints from the LHC and other experiments.
• To explore the possibility of lighter sparticle masses within the pMSSM10 framework.

Main Methods:

• Frequentist analysis using the MultiNest sampling algorithm.
• Inclusion of LHC data from ATLAS and CMS for jets, leptons, and electroweakly interacting sparticles.
• Utilization of HiggsSignals code for Higgs mass and rate measurements.
• Incorporation of B-physics observables, electroweak precision data, and dark matter constraints (XENON100, LUX).

Main Results:

• The pMSSM10 provides a supersymmetric interpretation of the Higgs boson, unlike CMSSM, NUHM1, and NUHM2.
• A minimum $\chi^2$ of 30.8% with 18 d.o.f. was found for the pMSSM10.
• Sparticle masses, including gluinos, squarks, and electroweak gauginos, can be significantly lighter in the pMSSM10 compared to other models.

Conclusions:

• The pMSSM10 is a more flexible framework for supersymmetric theories than previously studied models.
• Future LHC runs, colliders, and direct detection experiments hold potential for discovering lighter supersymmetric particles.
• The analysis highlights the importance of comprehensive experimental constraints for model building in particle physics.