Collider Interplay for Supersymmetry, Higgs and Dark Matter

2015/05/31 by O. L. Buchmueller, O. Buchmueller, M. Citron +10 · 1 citation
Physics and Astronomy · #Collider #Dark Matter and Cosmic Phenomena #Dark matter #Electroweak interaction #Gluino #Higgs boson #Large Hadron Collider #Minimal Supersymmetric Standard Model #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Superpartner #Supersymmetry #hep-ex #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-015-3675-3

published as Eur.Phys.J. C75 (2015) no.10, 469 · 47 pages, 26 figures

openalex publication_date 2015/10/01 · arxiv created 2016/04/01 · arxiv updated 2016/04/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We discuss the potential impacts on the CMSSM of future LHC runs and possible e⁺ e^- and higher-energy proton–proton colliders, considering searches for supersymmetry via / E_T events, precision electroweak physics, Higgs measurements and dark matter searches. We validate and present estimates of the physics reach for exclusion or discovery of supersymmetry via / E_T searches at the LHC, which should cover the low-mass regions of the CMSSM parameter space favoured in a recent global analysis. As we illustrate with a low-mass benchmark point, a discovery would make possible accurate LHC measurements of sparticle masses using the MT2 variable, which could be combined with cross-section and other measurements to constrain the gluino, squark and stop masses and hence the soft supersymmetry-breaking parameters m₀, m_1/2 and A₀ of the CMSSM. Slepton measurements at CLIC would enable m₀ and m_1/2 to be determined with high precision. If supersymmetry is indeed discovered in the low-mass region, precision electroweak and Higgs measurements with a future circular e⁺ e^- collider (FCC-ee, also known as TLEP) combined with LHC measurements would provide tests of the CMSSM at the loop level. If supersymmetry is not discovered at the LHC, it is likely to lie somewhere along a focus-point, stop-coannihilation strip or direct-channel A / H resonance funnel. We discuss the prospects for discovering supersymmetry along these strips at a future circular proton–proton collider such as FCC-hh. Illustrative benchmark points on these strips indicate that also in this case FCC-ee could provide tests of the CMSSM at the loop level.

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• A global fit of the MSSM with GAMBIT