Dark matter and collider signatures of the MSSM

Fowlie, Andrew; Kowalska, Kamila; Roszkowski, Leszek; Sessolo, Enrico Maria; Tsai, Yue-Lin Sming

doi:10.1103/physrevd.88.055012

Cited by 75 publications

(112 citation statements)

References 173 publications

(238 reference statements)

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“…At the highest scales, a UV complete model may be specified [5,6,7], but may involve many poorly constrained parameters with degenerate effects on low energy observables. Restriction to a small number of postulated fields [8,9,10,11,12,13,14], reduces the parameter number, but typically without justification for choice of field content.…”

Section: Introductionmentioning

confidence: 99%

Standard Model anatomy of WIMP dark matter direct detection. II. QCD analysis and hadronic matrix elements

2015

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Models of Weakly Interacting Massive Particles (WIMPs) specified at the electroweak scale are systematically matched to effective theories at hadronic scales where WIMP-nucleus scattering observables are evaluated. Anomalous dimensions and heavy quark threshold matching conditions are computed for the complete basis of lowest-dimension effective operators involving quarks and gluons. The resulting QCD renormalization group evolution equations are solved. The status of relevant hadronic matrix elements is reviewed and phenomenological illustrations are given, including details for the computation of the universal limit of nucleon scattering with heavy SU (2) W × U (1) Y charged WIMPs. Several cases of previously underestimated hadronic uncertainties are isolated. The results connect arbitrary models specified at the electroweak scale to a basis of n f = 3 flavor QCD operators. The complete basis of operators and Lorentz invariance constraints through order v 2 /c 2 in the nonrelativistic nucleon effective theory are derived.

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Section: Introductionmentioning

confidence: 99%

Standard Model anatomy of WIMP dark matter direct detection. II. QCD analysis and hadronic matrix elements

2015

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“…We assume Gaussian distributions for the constraints, with the exception of those on the Higgs sector, which are imposed through HiggsSignals and HiggsBounds, and the constraints on σ SI p from LUX [94]. The LUX constraint, which slightly improved on the limit from XENON100 [102], is included in the likelihood function following the procedure detailed in [23,93,103]. Additionally, we impose 95% C.L.…”

Section: Gut-defined Models and Experimental Constraintsmentioning

confidence: 99%

“…[23,36,123]. For every point in the considered parameter space a set of 10 5 events is generated at the parton level with PYTHIA8 [124], and the hadronization products are passed to the fast detector simulator DELPHES 3 [120] to reconstruct the physical objects.…”

Section: Numerical Implementation Of Lhc Searchesmentioning

confidence: 99%

“…The scans are performed with the package BayesFITS [23,36,77,78] The experimental constraints applied in this study.…”

Section: Gut-defined Models and Experimental Constraintsmentioning

confidence: 99%

“…The 8 TeV run has provided strong lower bounds on chargino and slepton masses, in particular when interpreted in the framework of simplified model spectra (SMS) [34]. However, several studies have shown [19,22,23,28,29] that if the experimental limits provided by the CMS and ATLAS collaborations are reinterpreted and applied to more general MSSM scenarios the 8 TeV LHC results can only constrain a small part of the available parameter space, so that ample room still remains to attribute a supersymmetric (SUSY) origin to δ (g − 2) µ .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

GUT-inspired SUSY and the muon g-2 anomaly: Prospects for LHC 14 TeV

Sessolo¹,

Kowalska²,

Roszkowski³

et al. 2016

Proceedings of 18th International Conference From the Planck Scale to the Electroweak Scale — PoS(PLANCK 2015)

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Abstract:We consider the possibility that the muon g − 2 anomaly, δ (g − 2) µ , finds its origins in low energy supersymmetry (SUSY). In the general MSSM the parameter space consistent with δ (g − 2) µ and correct dark matter relic density of the lightest neutralino easily evades the present direct LHC limits on sparticle masses and also lies to a large extent beyond future LHC sensitivity. The situation is quite different in GUT-defined scenarios where input SUSY parameters are no longer independent. We analyze to what extent the LHC can probe a broad class of GUT-inspired SUSY models with gaugino nonuniversality that are currently in agreement with the bounds from δ (g − 2) µ , as well as with the relic density and the Higgs mass measurement. To this end we perform a detailed numerical simulation of several searches for electroweakino and slepton production at the LHC and derive projections for the LHC 14 TeV run. We show that, within GUT-scale SUSY there is still plenty of room for the explanation of the muon anomaly, although the current LHC data already imply strong limits on the parameter space consistent with δ (g − 2) µ . On the other hand, we demonstrate that the parameter space will be basically fully explored within the sensitivity of the 14 TeV run with 300 fb −1 . This opens up the interesting possibility that, if the (g − 2) µ anomaly is real then some positive signals must be detected at the LHC, or else these models will be essentially ruled out. Finally, we identify the few surviving spectra that will provide a challenge for detection at the LHC 14 TeV run and we characterize their properties.

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Prospects for dark matter searches in the pMSSM

Roszkowski

Sessolo

Williams

2015

J. High Energ. Phys.

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We investigate the prospects for detection of neutralino dark matter in the 19-parameter phenomenological MSSM (pMSSM). We explore very wide ranges of the pMSSM parameters but pay particular attention to the higgsino-like neutralino at the ∼ 1 TeV scale, which has been shown to be a well motivated solution in many constrained supersymmetric models, as well as to a wino-dominated solution with the mass in the range of 2-3 TeV. After summarising the present bounds on the parameter space from direct and indirect detection experiments, we focus on prospects for detection of the Cherenkov Telescope Array (CTA). To this end, we derive a realistic assessment of the sensitivity of CTA to photon fluxes from dark matter annihilation by means of a binned likelihood analysis for the Einasto and Navarro-Frenk-White halo profiles. We use the most up to date instrument response functions and background simulation model provided by the CTA Collaboration. We find that, with 500 hours of observation, under the Einasto profile CTA is bound to exclude at the 95% C.L. almost all of the ∼ 1 TeV higgsino region of the pMSSM, effectively closing the window for heavy supersymmetric dark matter in many realistic models. CTA will be able to probe the vast majority of cases corresponding to a spin-independent scattering cross section below the reach of 1-tonne underground detector searches for dark matter, in fact even well below the irreducible neutrino background for direct detection. On the other hand, many points lying beyond the sensitivity of CTA will be within the reach of 1-tonne detectors, and some within collider reach. Altogether, CTA will provide a highly sensitive way of searching for dark matter that will be partially overlapping and partially complementary with 1-tonne detector and collider searches, thus being instrumental to effectively explore the nearly full parameter space of the pMSSM.

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Dark matter and collider signatures of the MSSM

Cited by 75 publications

References 173 publications

Standard Model anatomy of WIMP dark matter direct detection. II. QCD analysis and hadronic matrix elements

Standard Model anatomy of WIMP dark matter direct detection. II. QCD analysis and hadronic matrix elements

GUT-inspired SUSY and the muon g-2 anomaly: Prospects for LHC 14 TeV

Prospects for dark matter searches in the pMSSM

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