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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 present measurement of BR() (upper left panel), and prospective FCC-ee (TLEP) measurements [65] of BR() (upper right), BR() (lower left) and BR() (lower right) are superposed on the  plane in the CMSSM shown previously in Fig. 1. The colours represent deviations from the present central value in units of the present LHC experimental error (upper left panel), and the deviations from the values at the low-mass best-fit CMSSM point [33] of the values at other points in the  plane in units of the estimated future FCC-ee (TLEP) experimental errors [65] (other panels)
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Fig18: The present measurement of BR() (upper left panel), and prospective FCC-ee (TLEP) measurements [65] of BR() (upper right), BR() (lower left) and BR() (lower right) are superposed on the plane in the CMSSM shown previously in Fig. 1. The colours represent deviations from the present central value in units of the present LHC experimental error (upper left panel), and the deviations from the values at the low-mass best-fit CMSSM point [33] of the values at other points in the plane in units of the estimated future FCC-ee (TLEP) experimental errors [65] (other panels)

Mentions: We have made a similar estimate of the potential impact of the high-precision Higgs measurements possible with FCC-ee (TLEP) [65], as illustrated in the right panel of Fig. 14. In the upper left panel of Fig. 18 we display the deviation of the present experimental value of BR() from the values calculated at points within the 68 and 95 % CL regions in the plane of the CMSSM, in units of the present experimental error. In the other panels of Fig. 18 we show the numbers of FCC-ee (TLEP) ’s by which the values of BR() (upper right), BR() (lower left) and BR() (lower right) calculated at other points in the CMSSM plane differ from the values at the low-mass CMSSM best-fit point.


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 present measurement of BR() (upper left panel), and prospective FCC-ee (TLEP) measurements [65] of BR() (upper right), BR() (lower left) and BR() (lower right) are superposed on the  plane in the CMSSM shown previously in Fig. 1. The colours represent deviations from the present central value in units of the present LHC experimental error (upper left panel), and the deviations from the values at the low-mass best-fit CMSSM point [33] of the values at other points in the  plane in units of the estimated future FCC-ee (TLEP) experimental errors [65] (other panels)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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

Fig18: The present measurement of BR() (upper left panel), and prospective FCC-ee (TLEP) measurements [65] of BR() (upper right), BR() (lower left) and BR() (lower right) are superposed on the plane in the CMSSM shown previously in Fig. 1. The colours represent deviations from the present central value in units of the present LHC experimental error (upper left panel), and the deviations from the values at the low-mass best-fit CMSSM point [33] of the values at other points in the plane in units of the estimated future FCC-ee (TLEP) experimental errors [65] (other panels)
Mentions: We have made a similar estimate of the potential impact of the high-precision Higgs measurements possible with FCC-ee (TLEP) [65], as illustrated in the right panel of Fig. 14. In the upper left panel of Fig. 18 we display the deviation of the present experimental value of BR() from the values calculated at points within the 68 and 95 % CL regions in the plane of the CMSSM, in units of the present experimental error. In the other panels of Fig. 18 we show the numbers of FCC-ee (TLEP) ’s by which the values of BR() (upper right), BR() (lower left) and BR() (lower right) calculated at other points in the CMSSM plane differ from the values at the low-mass CMSSM best-fit point.

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.