Implications of CoGeNT’s new results for dark matter

Kelso, Chris

doi:10.1103/physrevd.84.083001

Cited by 131 publications

(219 citation statements)

References 69 publications

(101 reference statements)

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“…Moreover, data presented by the CRESST collaboration (which uses CaWO 4 as target and beta/gamma background rejection) also displayed an excess that could be compatible with light WIMPs [7]. Several analyses have investigated the compatibility of these three signals [8,9,10,11,12], although this only seems possible if extreme assumptions are made for the different uncertainties, such as the inclusion of large quenching factors or channeling effects.…”

Section: Introductionmentioning

confidence: 99%

Complementarity of dark matter direct detection: the role of bolometric targets

Cerdeño¹,

Cuesta²,

Fornasa³

et al. 2013

J. Cosmol. Astropart. Phys.

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We study how the combined observation of dark matter in various direct detection experiments can be used to determine the phenomenological properties of WIMP dark matter: mass, spin-dependent (SD) and spin-independent (SI) scattering cross section off nucleons. A convenient choice of target materials, including nuclei that couple to dark matter particles through a significantly different ratio of SD vs SI interactions, could break the degeneracies in the determination of those parameters that a single experiment cannot discriminate. In this work we investigate different targets that can be used as scintillating bolometers and could provide complementary information to germanium and xenon detectors. We observe that Al 2 O 3 and LiF bolometers could allow a good reconstruction of the DM properties over regions of the parameter space with a SD scattering cross section as small as 10 −5 pb and a SI cross section as small as 5 × 10 −10 pb for a 50 GeV WIMP. In the case of a CaWO 4 bolometer the area in which full complementarity is obtained is smaller but we show that it can be used to determine the WIMP mass and its SI cross section. For each target we study the required exposure and background.a MultiDark Scholar b MultiDark Fellow

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Section: Introductionmentioning

confidence: 99%

Complementarity of dark matter direct detection: the role of bolometric targets

Cerdeño¹,

Cuesta²,

Fornasa³

et al. 2013

J. Cosmol. Astropart. Phys.

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“…We can then compute the maximum value of the invisible width of the Higgs as a function of the scattering cross section on the proton : (12) and COGENT [45], or not [46]. We thus safely decided not to discuss in detail the COGENT issue in our analysis 4 See the works in [49] for an earlier study of invisible width of the Higgs.…”

Section: The Invisible Higgs Width : a Xenon100/lhc Complementaritymentioning

confidence: 99%

Higgs searches and singlet scalar dark matter: Combined constraints from XENON 100 and the LHC

2011

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XENON100 and the LHC are two of the most promising machines to test the physics beyond the Standard Model. In the meantime, indirect hints push us to believe that the dark matter and Higgs boson could be the two next fundamental particles to be discovered. Whereas ATLAS and CMS have just released their new limits on the Higgs searches, XENON100 obtained very recently strong constraints on DM-proton elastic scattering. In this work, we show that when we combined WMAP and the most recent results of XENON100, the invisible width of the Higgs to scalar dark matter is negligible( 10%), except in a small region with very light dark matter ( 10 GeV) not yet excluded by XENON100 or around 60 GeV where the ratio can reach 50% to 60%. The new results released by the Higgs searches of ATLAS and CMS set very strong limits on the elastic scattering cross section, even restricting it to the region 8 × 10 −46 cm 2 σ SI S−p 2 × 10 −45 cm 2 in the hypothesis 135 GeV MH 155 GeV.

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“…Indeed, the status of DM direct detection, with the three experiments DAMA [1], CoGeNT [2], and CRESST-II [3] reporting excesses consistent with a 10 GeV DM candidate, cries out for an independent, astrophysics-free verification. This has recently stimulated significant work aiming at a consistent explanation of these experiments [4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Unitarity and monojet bounds on models for DAMA, CoGeNT, and CRESST-II

2012

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If dark matter interacts with quarks or gluons, the mediator of these interactions is either directly accessible at the LHC or is so heavy that its effects are encoded in contact operators. We find that the self-consistency of a contact operator description at the LHC implies bounds on the mediator scale stronger than those found from missing energy searches. This translates into spin-independent elastic scattering cross-sections at a level < ∼ 10 −41 cm 2 , with direct implications for the DAMA, CoGeNT, and CRESST-II anomalies. We then carefully explore the potential of monojet searches in the light mediator limit, focusing on a Z model with arbitrary couplings to quarks and dark matter. We find that Tevatron data currently provides the most stringent bounds for dark matter and Z masses below 100 GeV, and that these searches can constrain models for the DAMA, CoGeNT, and CRESST-II anomalies only if the mediator can decay to a pair of dark matter particles.

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Implications of CoGeNT’s new results for dark matter

Cited by 131 publications

References 69 publications

Complementarity of dark matter direct detection: the role of bolometric targets

Complementarity of dark matter direct detection: the role of bolometric targets

Higgs searches and singlet scalar dark matter: Combined constraints from XENON 100 and the LHC

Unitarity and monojet bounds on models for DAMA, CoGeNT, and CRESST-II

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