Limits...
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 one-dimensional profile likelihood functions for  (upper left panel),  (upper right panel),  (lower left panel) and  (lower right panel) in the CMSSM, assuming that supersymmetry has not been discovered at the LHC with 3000/fb of luminosity, and neglecting inevitable improvements in other constraints on the supersymmetric models
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Fig22: The one-dimensional profile likelihood functions for (upper left panel), (upper right panel), (lower left panel) and (lower right panel) in the CMSSM, assuming that supersymmetry has not been discovered at the LHC with 3000/fb of luminosity, and neglecting inevitable improvements in other constraints on the supersymmetric models

Mentions: Figure 22 shows the corresponding one-dimensional profile likelihood functions for (upper left panel) and (upper right panel). In the case of the gluino, we find a prospective 95 % CL lower limit  TeV, and a lower limit  TeV for the squark mass. The limitations of our CMSSM sample [33] are such that we do not have any useful information as regards the likelihood functions for large masses, where they are expected to be quite flat. The lower left panel of Fig. 22 shows the corresponding one-dimensional profile likelihood function for : the dip at  GeV corresponds to the ‘cockscomb’ feature visible as an isolated 68 % CL region with  GeV in Fig. 21, with the local peak at  GeV corresponding to the gap between the ‘cockscomb’ and the Eurasia region. As is also apparent in Fig. 13, within the CMSSM there is significant likelihood that  GeV, so that pair production would be possible at CLIC, even if the LHC fails to discover supersymmetry.Fig. 22


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 one-dimensional profile likelihood functions for  (upper left panel),  (upper right panel),  (lower left panel) and  (lower right panel) in the CMSSM, assuming that supersymmetry has not been discovered at the LHC with 3000/fb of luminosity, and neglecting inevitable improvements in other constraints on the supersymmetric models
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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

Fig22: The one-dimensional profile likelihood functions for (upper left panel), (upper right panel), (lower left panel) and (lower right panel) in the CMSSM, assuming that supersymmetry has not been discovered at the LHC with 3000/fb of luminosity, and neglecting inevitable improvements in other constraints on the supersymmetric models
Mentions: Figure 22 shows the corresponding one-dimensional profile likelihood functions for (upper left panel) and (upper right panel). In the case of the gluino, we find a prospective 95 % CL lower limit  TeV, and a lower limit  TeV for the squark mass. The limitations of our CMSSM sample [33] are such that we do not have any useful information as regards the likelihood functions for large masses, where they are expected to be quite flat. The lower left panel of Fig. 22 shows the corresponding one-dimensional profile likelihood function for : the dip at  GeV corresponds to the ‘cockscomb’ feature visible as an isolated 68 % CL region with  GeV in Fig. 21, with the local peak at  GeV corresponding to the gap between the ‘cockscomb’ and the Eurasia region. As is also apparent in Fig. 13, within the CMSSM there is significant likelihood that  GeV, so that pair production would be possible at CLIC, even if the LHC fails to discover supersymmetry.Fig. 22

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.