Collider Interplay for Supersymmetry, Higgs and Dark Matter

Buchmueller, O. L.; Citron, M.; Ellis, John; Guha, Sunny; Marrouche, J.; Olive, Keith A.; Vries, Kees de; Zheng, Jiaming

doi:10.1140/epjc/s10052-015-3675-3

Cited by 34 publications

(43 citation statements)

References 156 publications

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“…The red shaded 10 The maximal value of the LSP mass that is compatible with it being a viable dark matter candidate in this case is similar to the CMSSM case, even though there are additional squarks to mediate χq → qg. This is because the limiting reaction is gluino-gluino annihilation, which is the same in the two cases.…”

Section: Jhep02(2016)071mentioning

confidence: 66%

“…The end-point of the coannihilation strip occurs at m 3/2 500 TeV where m χ 8.3 TeV. 10 We list in the last two columns of table 1 some details of sample parameter sets from the model planes in figures 10 and 11. We recall that A 0 = 0 in these models, and display in parentheses (.…”

Section: Jhep02(2016)071mentioning

confidence: 99%

“…Examples include models where R-parity is violated [4,5], or the spectra are compressed [6][7][8][9]. Alternatively, sparticles might be too heavy to have been detected at LHC Run I, but might be within range of future LHC runs [10]. It is also possible that supersymmetric particles may lie beyond the reach of the LHC altogether, and require a future higher-energy pp collider for their detection.…”

Section: Introductionmentioning

confidence: 99%

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Scenarios for gluino coannihilation

Ellis

Evans

Luo

et al. 2016

J. High Energ. Phys.

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We study supersymmetric scenarios in which the gluino is the next-to-lightest supersymmetric particle (NLSP), with a mass sufficiently close to that of the lightest supersymmetric particle (LSP) that gluino coannihilation becomes important. One of these scenarios is the MSSM with soft supersymmetry-breaking squark and slepton masses that are universal at an input GUT renormalization scale, but with non-universal gaugino masses. The other scenario is an extension of the MSSM to include vector-like supermultiplets. In both scenarios, we identify the regions of parameter space where gluino coannihilation is important, and discuss their relations to other regions of parameter space where other mechanisms bring the dark matter density into the range allowed by cosmology. In the case of the non-universal MSSM scenario, we find that the allowed range of parameter space is constrained by the requirement of electroweak symmetry breaking, the avoidance of a charged LSP and the measured mass of the Higgs boson, in particular, as well as the appearance of other dark matter (co)annihilation processes. Nevertheless, LSP masses m χ 8 TeV with the correct dark matter density are quite possible. In the case of pure gravity mediation with additional vector-like supermultiplets, changes to the anomalymediated gluino mass and the threshold effects associated with these states can make the gluino almost degenerate with the LSP, and we find a similar upper bound.

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Section: Jhep02(2016)071mentioning

confidence: 66%

Section: Jhep02(2016)071mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Scenarios for gluino coannihilation

Ellis

Evans

Luo

et al. 2016

J. High Energ. Phys.

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“…For parameters where the stau and LSP are nearly degenerate, we obtain the stau coannihilation strip, [24][25][26] or when the stop and LSP are nearly degenerate at large A 0 /m 0 , we find a stop coannihilation strip. [27][28][29] At large tan β, the funnel strips 8 appear when 2m χ m H,A , where m H,A are the masses of the heavy Higgs scalar and pseudoscalar. Finally, there is also the possibility of a focus point region, 30,31 where the value of the µ term becomes relatively small near the edge of where radiative electroweak symmetry breaking is possible.…”

Section: Pre-run Imentioning

confidence: 99%

Supersymmetric versus SO(10) models of dark matter

Olive

2017

Int. J. Mod. Phys. A

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After the results of Run I, can we still "guarantee" the discovery of supersymmetry at the LHC? It is shown that viable dark matter candidates in CMSSM-like models tend to lie in strips (coannihilation, funnel, focus point) in parameter space. The role of grand unification in constructing supersymmetric models is discussed and it is argued that nonsupersymmetric GUTs such as SO(10) may provide alternative solutions to many of the standard problems addressed by supersymmetry.

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“…For the pMSSM10 (bottom right) we plot on the other hand the (mq, m χ 0 1 ) plane, since m 0 and m 1/2 have no meaning in this model. To understand the current and future reach of LHC searches, concerning the GUT models, we plot with a solid purple line the current 95% CL exclusion from the SUSY E T searches [17], while we use a dashed purple contour for the 5σ discovery reach for E T searches with 3000 fb −1 [18] at 14 TeV. These correspond approximately to the 95% CL exclusion reach with 300 fb −1 at 14 TeV.…”

Section: Thementioning

confidence: 99%

Prospects for SUSY dark matter after the LHC Run 1

Bagnaschi¹

2016

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2015)

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In this proceeding we present the results of the recent phenomenological study by the MasterCode collaboration [1] of the Dark Matter (DM) annihilation mechanisms in the currently allowed parameter space of the CMSSM, NUHM1, NUHM2 and pMSSM10 models. We have assumed that the lightest neutralino χ 0 1 is the Lightest Supersymmetric Particle (LSP). The annihilation mechanisms involved in these models range from coannihilation with the next-to-LSP (NLSP) particle (e.g. the lightest stauτ 1 , stopt 1 or charginoχ ± 1 ) to resonant annihilation via s-channel exchange of a Higgs (h/H/A) boson or a Z boson and enhanced annihilation rate in the so-called focus-point region due to a larger Higgsino component of the LSP. Special attention has been given to the interplay of future LHC searches and direct DM detection experiments in the exploration of the allowed regions. We have found that the τ 1 coannihilation regions of the CMSSM, NUHM1 and NUHM2 will be largely covered by future LHC searches for E T signatures and long-lived charged particles, while direct detection DM experiments (LZ) will probe the H/A funnel, focus point andχ ± 1 coannihilation regions. In the case of the pMSSM10, LHC experiments will be able to explore only parts of the preferred 68% CL region, whereχ ± 1 is the dominant mechanism. On the other hand, DM direct detection experiments will be able to probe the favored pMSSM10 parameter space more extensively.

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Collider Interplay for Supersymmetry, Higgs and Dark Matter

Cited by 34 publications

References 156 publications

Scenarios for gluino coannihilation

Scenarios for gluino coannihilation

Supersymmetric versus SO(10) models of dark matter

Prospects for SUSY dark matter after the LHC Run 1

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