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Collider Interplay for Supersymmetry, Higgs and Dark Matter.

Buchmueller O, Citron M, Ellis J, Guha S, Marrouche J, Olive KA, de Vries K, Zheng J - Eur Phys J C Part Fields (2015)

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: High Energy Physics Group, Blackett Lab., Imperial College, Prince Consort Road, London, SW7 2AZ UK.

ABSTRACT

We discuss the potential impacts on the CMSSM of future LHC runs and possible [Formula: see text] and higher-energy proton-proton colliders, considering searches for supersymmetry via  [Formula: see text] 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 [Formula: see text] 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 [Formula: see text] and [Formula: see text] of the CMSSM. Slepton measurements at CLIC would enable [Formula: see text] and [Formula: see text] 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 [Formula: see text] 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.

No MeSH data available.


The sensitivities of the total sparticle cross section to  (left panel) and  (right panel), expressed as functions of the mass differences  relative to the low-mass best-fit values in the CMSSM
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Fig3: The sensitivities of the total sparticle cross section to (left panel) and (right panel), expressed as functions of the mass differences relative to the low-mass best-fit values in the CMSSM

Mentions: We estimate first the potential resolution with which the gluino and squark masses could be measured. For this purpose, we consider three contributions to the determination of these model parameters: measurements of the total cross section, the distribution in the MT2 variable [116, 117], and the spectator jet energies in decay. Figure 3 shows how the total cross section for strongly interacting particle production at LHC14 obtained from Pythia depends on the gluino mass (left panel) and the squark mass (right panel), expressed as functions of the mass differences relative to the low-mass best-fit values in the CMSSM.5 We see that the dependence of the cross section on is much weaker than that on . In the following we combine the information that can be derived the cross section with that obtainable from an analysis using the MT2 variable.Fig. 4


Collider Interplay for Supersymmetry, Higgs and Dark Matter.

Buchmueller O, Citron M, Ellis J, Guha S, Marrouche J, Olive KA, de Vries K, Zheng J - Eur Phys J C Part Fields (2015)

The sensitivities of the total sparticle cross section to  (left panel) and  (right panel), expressed as functions of the mass differences  relative to the low-mass best-fit values in the CMSSM
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591918&req=5

Fig3: The sensitivities of the total sparticle cross section to (left panel) and (right panel), expressed as functions of the mass differences relative to the low-mass best-fit values in the CMSSM
Mentions: We estimate first the potential resolution with which the gluino and squark masses could be measured. For this purpose, we consider three contributions to the determination of these model parameters: measurements of the total cross section, the distribution in the MT2 variable [116, 117], and the spectator jet energies in decay. Figure 3 shows how the total cross section for strongly interacting particle production at LHC14 obtained from Pythia depends on the gluino mass (left panel) and the squark mass (right panel), expressed as functions of the mass differences relative to the low-mass best-fit values in the CMSSM.5 We see that the dependence of the cross section on is much weaker than that on . In the following we combine the information that can be derived the cross section with that obtainable from an analysis using the MT2 variable.Fig. 4

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: High Energy Physics Group, Blackett Lab., Imperial College, Prince Consort Road, London, SW7 2AZ UK.

ABSTRACT

We discuss the potential impacts on the CMSSM of future LHC runs and possible [Formula: see text] and higher-energy proton-proton colliders, considering searches for supersymmetry via  [Formula: see text] 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 [Formula: see text] 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 [Formula: see text] and [Formula: see text] of the CMSSM. Slepton measurements at CLIC would enable [Formula: see text] and [Formula: see text] 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 [Formula: see text] 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.

No MeSH data available.