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.


Left panel the sensitivity of the total stop pair-production cross section to . Right panel Simulations for 14-TeV collisions of the distributions in the MT2 variable for the nominal value of the lighter stop mass  GeV and values  GeV, with the other sparticle masses fixed to their nominal best-fit values. The insert shows the integrated luminosities at 14 TeV that would be required to distinguish at the 3- level between the best fit and other models with the indicated mass shifts  relative to the value at the low-mass best-fit point
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4591918&req=5

Fig10: Left panel the sensitivity of the total stop pair-production cross section to . Right panel Simulations for 14-TeV collisions of the distributions in the MT2 variable for the nominal value of the lighter stop mass  GeV and values  GeV, with the other sparticle masses fixed to their nominal best-fit values. The insert shows the integrated luminosities at 14 TeV that would be required to distinguish at the 3- level between the best fit and other models with the indicated mass shifts relative to the value at the low-mass best-fit point

Mentions: We have also considered the possible accuracy in measuring via production at the LHC at 14 TeV. The left panel of Fig. 10 shows the sensitivity of the total stop pair-production cross section to : we see that over the displayed range it is greater than those to the and , which were shown in Fig. 3. The right panel of Fig. 10 shows histograms of MT2 for the nominal mass  GeV at the representative low-mass best-fit point and for choices differing by  GeV. These cases are quite distinct, as is also seen in the inset, which displays the luminosities required for 3- discrimination between the nominal value of and selected larger or smaller values.


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)

Left panel the sensitivity of the total stop pair-production cross section to . Right panel Simulations for 14-TeV collisions of the distributions in the MT2 variable for the nominal value of the lighter stop mass  GeV and values  GeV, with the other sparticle masses fixed to their nominal best-fit values. The insert shows the integrated luminosities at 14 TeV that would be required to distinguish at the 3- level between the best fit and other models with the indicated mass shifts  relative to the value at the low-mass best-fit point
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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

Fig10: Left panel the sensitivity of the total stop pair-production cross section to . Right panel Simulations for 14-TeV collisions of the distributions in the MT2 variable for the nominal value of the lighter stop mass  GeV and values  GeV, with the other sparticle masses fixed to their nominal best-fit values. The insert shows the integrated luminosities at 14 TeV that would be required to distinguish at the 3- level between the best fit and other models with the indicated mass shifts relative to the value at the low-mass best-fit point
Mentions: We have also considered the possible accuracy in measuring via production at the LHC at 14 TeV. The left panel of Fig. 10 shows the sensitivity of the total stop pair-production cross section to : we see that over the displayed range it is greater than those to the and , which were shown in Fig. 3. The right panel of Fig. 10 shows histograms of MT2 for the nominal mass  GeV at the representative low-mass best-fit point and for choices differing by  GeV. These cases are quite distinct, as is also seen in the inset, which displays the luminosities required for 3- discrimination between the nominal value of and selected larger or smaller values.

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.