Search for inelastic dark matter with the CDMS experiment

Arrenberg, S.

doi:10.22323/1.110.0021

Cited by 8 publications

(12 citation statements)

References 15 publications

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“…We compare the effects of two halo models on the limits. The first uses standard halo assumptions as in [15], with a WIMP mass density ρ 0 = 0.3 GeV/c 2 /cm 3 , most probable WIMP velocity of 220 km/s, mean circular velocity of the Earth with respect to the galactic center of 232 km/s, galactic escape velocity of 544 km/s, and a velocity distribution that correctly takes into account the effect of the Earth's velocity on the escape-velocity cutoff [29]. The second halo model uses the functional form [10], CDMS II Ge reanalysis (dark blue) [26], and CDMS II Si (red) [27], and estimated limits for LUX (black) [11], for the Maxwellian halo (solid) and an alternate halo model (dashed).…”

Section: Exclusion Limits On a Set Of Eft Operatorsmentioning

confidence: 99%

Dark matter effective field theory scattering in direct detection experiments

Schneck¹,

Cabrera²,

Cerdeño³

et al. 2015

Phys. Rev. D

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We examine the consequences of the effective field theory (EFT) of dark matter-nucleon scattering for current and proposed direct detection experiments. Exclusion limits on EFT coupling constants computed using the optimum interval method are presented for SuperCDMS Soudan, CDMS II, and LUX, and the necessity of combining results from multiple experiments in order to determine dark matter parameters is discussed. We demonstrate that spectral differences between the standard dark matter model and a general EFT interaction can produce a bias when calculating exclusion limits and when developing signal models for likelihood and machine learning techniques. We also discuss the implications of the EFT for the next-generation (G2) direct detection experiments and point out regions of complementarity in the EFT parameter space.PACS numbers: 95.35.+d,95.30.Cq,29.40.Wk

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Section: Exclusion Limits On a Set Of Eft Operatorsmentioning

confidence: 99%

Dark matter effective field theory scattering in direct detection experiments

Schneck¹,

Cabrera²,

Cerdeño³

et al. 2015

Phys. Rev. D

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“…Thanks to the capability to produce DM particles in a wide mass range and to the apparent independence from astrophysical uncertainties, collider searches provide complementary results to the direct and indirect detection experiments [1][2][3][4][5][6]. When setting collider constraints on DM interactions, the most straightforward way of parameterizing the DM-SM coupling is through an effective field theory (EFT) description.…”

Section: Jhep07(2015)031mentioning

confidence: 99%

“…(3.1), respectively, whereas M O σ,V are the amplitudes corresponding to the effective operators. 5 The procedure described above fully accounts for the interference between the two relevant Lorentz structures, and was applied in the study of the N χ = 2 scenario, where both monophoton and diphoton signals are given by 2 → 2 scatterings followed by the decay of χ h , as shown in figures 13 and 16. On the other hand, for N χ = 1 the main constraint comes from the monojet process in figure 10, which is genuinely a 2 → 3 scattering.…”

Section: Jhep07(2015)031mentioning

confidence: 99%

“…To simplify the event generation we use OV instead, and include the q 2 factor from the derivatives in the reweighting of the events. 5 Notice that the statistical uncertainty on the signal also needs to be rescaled by the reweighting factor. This, however, does not affect our analysis, where all uncertainties on the signal were neglected.…”

Section: Lhc Monojetmentioning

confidence: 99%

“…(3.4) as a function of the decay length. Using this, each simulated MC event contributes to the differential cross section in ∆z γ as 5) where the µ characterizing the probability distribution dP/d∆z γ of the decay is defined as…”

Section: Jhep07(2015)031mentioning

confidence: 99%

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The dark penguin shines light at colliders

Primulando

Salvioni

Tsai

2015

J. High Energ. Phys.

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Abstract:Collider experiments are one of the most promising ways to constrain Dark Matter (DM) interactions. For several types of DM-Standard Model couplings, a meaningful interpretation of the results requires to go beyond effective field theory, considering simplified models with light mediators. This is especially important in the case of loopmediated interactions. In this paper we perform the first simplified model study of the magnetic dipole interacting DM, by including the one-loop momentum-dependent form factors that mediate the coupling -given by the Dark Penguin -in collider processes. We compute bounds from the monojet, monophoton, and diphoton searches at the 8 and 14 TeV LHC, and compare the results to those of direct and indirect detection experiments. Future searches at the 100 TeV hadron collider and at the ILC are also addressed. We find that the optimal search strategy requires loose cuts on the missing transverse energy, to capture the enhancement of the form factors near the threshold for on-shell production of the mediators. We consider both minimal models and models where an additional state beyond the DM is accessible. In the latter case, under the assumption of anarchic flavor structure in the dark sector, the LHC monophoton and diphoton searches will be able to set much stronger bounds than in the minimal scenario. A determination of the mass of the heavier dark fermion might be feasible using the M T 2 variable. In addition, if the Dark Penguin flavor structure is almost aligned with that of the DM mass, a displaced signal from the decay of the heavier dark fermion into the DM and photon can be observed. This allows us to set constraints on the mixings and couplings of the model from an existing search for non-pointing photons.

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Probing new physics scales from Higgs and electroweak observables at e + e − Higgs factory

Xiao

2016

J. High Energ. Phys.

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New physics beyond the standard model (SM) can be model-independently formulated via dimension-6 effective operators, whose coefficients (cutoffs) characterize the scales of new physics. We study the probe of new physics scales from the electroweak precision observables (EWPO) and the Higgs observables (HO) at the future e + e − Higgs factory (such as CEPC). To optimize constraints of new physics from all available observables, we establish a scheme-independent approach. With this formulation, we treat the SM electroweak parameters and the coefficients of dimension-6 operators on equal footing, which can be fitted simultaneously by the same χ 2 function. As deviations from the SM are generally small, we can expand the new physics parameters up to linear order and perform an analytical χ 2 fit to derive the potential reach of the new physics scales. We find that the HO from both Higgs produnction and decay rates can probe the new physics scales up to 10 TeV (and to 44 TeV for the case of gluon-involved operator O g ), and the new physics scales of Yukawa-type operators can be probed by the precision Higgs coupling measurements up to (13 − 25) TeV. Further including the EWPO can push the limit up to 35 TeV. From this prospect, we demonstrate that the EWPO measured in the early phase of a Higgs factory can be as important as the Higgs observables. These indirect probes of new physics scales at the Higgs factory can mainly cover the energy range to be directly explored by the next generation hadron colliders of pp (50 −100 TeV), such as the SPPC and FCC-hh.

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Search for inelastic dark matter with the CDMS experiment

Cited by 8 publications

References 15 publications

Dark matter effective field theory scattering in direct detection experiments

Dark matter effective field theory scattering in direct detection experiments

The dark penguin shines light at colliders

Probing new physics scales from Higgs and electroweak observables at e + e − Higgs factory

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