Prospects for detecting supersymmetric dark matter at Post-LEP benchmark points

Ellis, John; Feng, Jonathan L.; Ferstl, Andrew; Matchev, K.; Olive, Keith A.

doi:10.1007/s100520200897

Cited by 76 publications

(81 citation statements)

References 62 publications

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“…On the other hand, we note that before applying these constraints, and even afterwards at the 95 % CL, there are values for σ SI p that go far below this neutrino 'floor', highlighting the complementarity of direct detection experiments and searches at the LHC. Since these very low values of σ SI p are due to cancellations between different contributions to the spinindependent scattering matrix element [138][139][140][141][142], one may ask whether the spin-independent cross sections on proton and neutron targets could be very different when this cancellation occurs [143,144]. More specifically, one may wonder whether, for models in which σ SI p is below the neutrino 'floor', the cross section σ SI n for scattering on a neutron target may be less suppressed, perhaps remaining above the neutrino 'floor'?…”

Section: Direct Dark Matter Detectionmentioning

confidence: 99%

The pMSSM10 after LHC run 1

et al. 2015

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We present a frequentist analysis of the parameter space of the pMSSM10, in which the following ten soft SUSY-breaking parameters are specified independently at the mean scalar top mass scale M SUSY ≡ √ mt 1 mt 2 :the gaugino masses M 1,2,3 , the first-and second-generation squark masses mq 1 = mq 2 , the third-generation squark mass mq 3 , a common slepton mass m˜ and a common trilinear mixing parameter A, as well as the Higgs mixing parameter μ, the pseudoscalar Higgs mass M A and tan β, the ratio of the two Higgs vacuum expectation values. We use the MultiNest sampling algorithm with ∼1.2 ×10 9 points to sample the pMSSM10 parameter space. A dedicated study shows that the sensitivities to strongly interacting sparticle masses of ATLAS and CMS searches for jets, leptons + / E T signals depend only weakly on many of the other pMSSM10 parameters. With the aid of the Atom and Scorpion codes, we also implement the LHC searches for electroweakly interacting sparticles and light stops, so as to confront the pMSSM10 parameter space with all relevant SUSY searches. In addition, our analysis includes Higgs mass and rate measurements using the HiggsSignals code, SUSY Higgs exclusion bounds, the measurements of BR(B s → μ + μ − ) by LHCb and CMS, other B-physics observables, electroweak precision observables, the cold dark matter density and the XENON100 and LUX searches for spin-independent dark matter scattering, assuming that the cold dark matter is mainly provided by the lightest neutralinoχ 0 1 . We show that the pMSSM10 is able to provide a supersymmetric interpretation of (g − 2) μ , unlike the CMSSM, NUHM1 and NUHM2. As a result, we find (omitting Higgs rates) that the minimum χ 2 = 20.5 with 18 degrees of freedom (d.o.f.) in the pMSSM10, corresponding to a χ 2 probability of 30.8 %, to be compared with χ 2 /d.o.f. = 32.8/24 (31.1/23) (30.3/22) in the CMSSM (NUHM1) (NUHM2). We display the one-dimensional likelihood functions for sparticle masses, and we show that they may be significantly lighter in the pMSSM10 than in the other models, e.g., the gluino may be as light as ∼1250 GeV at the 68 % CL, and squarks, stops, electroweak gauginos and sleptons may be much lighter than in the CMSSM, NUHM1 and NUHM2. We discuss the discovery potential of future LHC runs, e + e − colliders and direct detection experiments.

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Section: Direct Dark Matter Detectionmentioning

confidence: 99%

The pMSSM10 after LHC run 1

et al. 2015

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“…This setup has been considered extensively in the contest of dark matter detection (a list of recent references includes, e.g., [39][40][41][42][43][44]) and therefore the comparison of our results with previous work and other complementary techniques should be transparent in this case.…”

Section: A Specific Wimp: the Lightest Neutralino In The Msugra Framementioning

confidence: 99%

The Galactic center as a dark matter gamma-ray source

Cesarini¹,

Fucito²,

Lionetto³

et al. 2004

Astroparticle Physics

147

157

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The EGRET telescope has identified a gamma-ray source at the Galactic center. We point out here that the spectral features of this source are compatible with the gamma-ray flux induced by pair annihilations of dark matter weakly interacting massive particles (WIMPs). We show that the discrimination between this interpretation and other viable explanations will be possible with GLAST, the next major gamma-ray telescope in space, on the basis of both the spectral and the angular signature of the WIMP-induced component. If, on the other hand, the data will point to an alternative explanation, we prove that there will still be the possibility for GLAST to single out a weaker dark matter source at the Galactic center. The potential of GLAST has been explored both in the context of a generic simplified toy-model for WIMP dark matter, and in a more specific setup, the case of dark matter neutralinos in the minimal supergravity framework. In the latter, we find that even in the case of moderate dark matter densities in the Galactic center region, there are portions of the parameter space which will be probed by GLAST.

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“…2. 5 The same cannot be said for the spin-independent cross-sections, because the very small cross sections due to cancellations occur within the GUT stability region, except when one applies the g Ϫ2 constraint, which excludes the Ͻ0 region. The interplay of the other constraints is more complicated: as usual, Ͻ0 is disfavored by the m h , b →s␥ and g Ϫ2 constraints.…”

Section: B Examples Of "µM a … Planesmentioning

confidence: 99%

Direct detection of dark matter in the minimal supersymmetric standard model with non-universal Higgs boson masses

et al. 2003

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We calculate dark matter scattering rates in the minimal supersymmetric extension of the standard model ͑MSSM͒, allowing the soft supersymmetry-breaking masses of the Higgs multiplets, m 1,2 , to be nonuniversal ͑NUHM͒. Compared with the constrained MSSM ͑CMSSM͒ in which m 1,2 are required to be equal to the soft supersymmetry-breaking masses m 0 of the squark and slepton masses, we find that the elastic scattering cross sections may be up to two orders of magnitude larger than values in the CMSSM for similar lightest supersymmetric particle masses. We find the following preferred ranges for the spin-independent cross section, 10 Ϫ6 pbտ SI տ10 Ϫ10 pb, and, for the spin-dependent cross section, 10 Ϫ3 pbտ SD , with the lower bound on SI dependent on using the putative constraint from the muon anomalous magnetic moment. We stress the importance of incorporating accelerator and dark matter constraints in restricting the NUHM parameter space, and also of requiring that no undesirable vacuum appear below the grand unified theory ͑GUT͒ scale. In particular, values of the spin-independent cross section another order of magnitude larger would appear to be allowed, for small tan ␤, if the GUT vacuum stability requirement were relaxed, and much lower cross-section values would be permitted if the muon anomalous magnetic moment constraint were dropped.

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Prospects for detecting supersymmetric dark matter at Post-LEP benchmark points

Cited by 76 publications

References 62 publications

The pMSSM10 after LHC run 1

The pMSSM10 after LHC run 1

The Galactic center as a dark matter gamma-ray source

Direct detection of dark matter in the minimal supersymmetric standard model with non-universal Higgs boson masses

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