Halo-independent comparison of direct detection experiments in the effective theory of dark matter-nucleon interactions

Ibarra, Alejandro; Rappelt, Andreas; Wild, Sebastian

doi:10.1088/1475-7516/2018/07/028

Cited by 14 publications

(13 citation statements)

References 59 publications

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“…One should also remark that the SHM provides a simplified approximate description of the DM galactic distribution, challenged by the results from the most recent DM hydrodynamical simulations, including the effects of baryons [290,291], as well as by observational evidences from the GAIA collaboration [292][293][294]. Notice that a proper assessment of the astrophysical inputs is also crucial when the outcome of different experiments is compared; this problem can nevertheless be encompassed through the so-called halo independent methods [295][296][297][298][299][300][301].…”

Section: Uncertainties and Caveats In The Comparison Of Dm Limitsmentioning

confidence: 99%

Dark Matter through the Higgs portal

Arcadi,

Djouadi,

Raidal

2019

Preprint

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We review scenarios in which the particles that account for the Dark Matter (DM) in the Universe interact only through their couplings with the Higgs sector of the theory, the so-called Higgs-portal models. In a first step, we use a general and model-independent approach in which the DM particles are singlets with spin 0, 1 2 or 1, and assume a minimal Higgs sector with the presence of only the Standard Model (SM) Higgs particle observed at the LHC. In a second step, we discuss non-minimal scenarios in which the spin-1 2 DM particle is accompanied by additional lepton partners and consider several possibilities like sequential, singlet-doublet and vector-like leptons. In a third step, we examine the case in which it is the Higgs sector of the theory which is enlarged either by a singlet scalar or pseudoscalar field, an additional two Higgs doublet field or by both; in this case, the matter content is also extended in several ways. Finally, we investigate the case of supersymmetric extensions of the SM with neutralino DM, focusing on the possibility that the latter couples mainly to the neutral Higgs particles of the model which then serve as the main portals for DM phenomenology. In all these scenarios, we summarize and update the present constraints and future prospects from the collider physics perspective, namely from the determination of the SM Higgs properties at the LHC and the search for its invisible decays into DM, and the search for heavier Higgs bosons and the DM companion particles at high-energy colliders. We then compare these results with the constraints and prospects obtained from the cosmological relic abundance as well as from direct and indirect DM searches in astroparticle physics experiments. The complementarity of collider and astroparticle DM searches is investigated in all the considered models.

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Section: Uncertainties and Caveats In The Comparison Of Dm Limitsmentioning

confidence: 99%

Dark Matter through the Higgs portal

Arcadi,

Djouadi,

Raidal

2019

Preprint

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“…value of the modulation amplitude allowed by present constraints, i.e. to take S DAMA,max m,n in » n as a free parameter and find the minimal value Ŝ DAMA,max m,n for which the condition (25) is verified [27,28]. A schematic view of the intersection between the c T DAMA m,n (m χ , δ)/ Ŝ DAMA,max m,n c = 1 ellipse and the edge of the experimentally allowed volume in the coupling constants space is provided in Fig.…”

Section: Wimp Inelastic Scattering In Non-relativistic Effective Modelsmentioning

confidence: 99%

“…Due to this factorization in the effective field theory parameter space the surfaces of constant signal in different detectors are ellipsoids, and, as discussed in Refs. [27,28], the determination of their geometrical intersections allows to efficiently compare the results of various direct detection experiments in the high-dimensional parameter space of the non-relativistic effective theory, without making any a priori assumptions regarding the relative size of the various Wilson coefficients c τ k . In this way for a standard halo model the DAMA/LIBRA-phase1 result [1][2][3] was shown to be incompatible to the constraints from other experiments in the case of elastic interactions of a WIMP particle with spin ≤ 1/2 and the interaction Hamiltonian of Eq.…”

Section: Introductionmentioning

confidence: 99%

Probing DAMA/LIBRA data in the full parameter space of WIMP effective models of inelastic scattering

2019

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We discuss the compatibility of the combined annual modulation effect measured by DAMA/LIBRA-phase1 and DAMA/LIBRA-phase2 with an explanation in terms of inelastic scattering events induced by the most general Galilean-invariant effective contact interaction of a Weakly Interacting Massive Particle (WIMP) dark matter particle of spin 0, 1/2 or 1. We take into account all the possible interferences among operators by studying the intersections among the ellipsoidal surfaces of constant signal of DAMA and other experiments in the space of the coupling constants of the effective theory. In our analysis we assume a standard Maxwellian velocity distribution in the Galaxy. We find that, compared to the elastic case, inelastic scattering partially relieves but does not eliminate the existing tension between the DAMA effect and the constraints from the null results of other experiments. Such tension is very large in all the parameter space with the exception of a small region for WIMP mass m χ ≃ 10 GeV and mass splitting δ > ∼ 20 keV, where it is partially, but not completely relieved. In such region the bounds from fluorine targets are evaded in a kinematic way because the minimal WIMP incoming speed required to trigger upscatters off fluorine exceeds the maximal WIMP velocity in the Galaxy, or is very close to it. As a consequence, we also find that the residual tension between DAMA and other results is considerably more sensitive on the astrophysical parameters compared to the elastic case. We find that the configurations with the smallest tension can produce enough yearly modulation in some of the DAMA bins in compliance with the constraints from other experiments, but the ensuing shape of the modulation spectrum is too steep compared to the measured one. For such configurations the recent COSINE-100 bound is evaded in a natural way due to their large expected modulation fractions.

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“…Here we take the astrophysical parameters 1 from [32] (the impact of the astrophysical uncertainties is considered, e.g., in [33][34][35]). Our focus lies on the cross section dσ=dq 2 , which for the leading isoscalar SI interaction reads dσ dq…”

Section: Theorymentioning

confidence: 99%

Discriminating WIMP-nucleus response functions in present and future XENON-like direct detection experiments

et al. 2018

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The standard interpretation of direct-detection limits on dark matter involves particular assumptions of the underlying WIMP-nucleus interaction, such as, in the simplest case, the choice of a Helm form factor that phenomenologically describes an isoscalar spin-independent interaction. In general, the interaction of dark matter with the target nuclei may well proceed via different mechanisms, which would lead to a different shape of the corresponding nuclear structure factors as a function of the momentum transfer q. We study to what extent different WIMP-nucleus responses can be differentiated based on the q-dependence of their structure factors (or "form factors"). We assume an overall strength of the interaction consistent with present spin-independent limits and consider an exposure corresponding to XENON1T-like, XENONnT-like, and DARWIN-like direct detection experiments. We find that, as long as the interaction strength does not lie too much below current limits, the DARWIN settings allow a conclusive discrimination of many different response functions based on their q-dependence, with immediate consequences for elucidating the nature of dark matter.

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Halo-independent comparison of direct detection experiments in the effective theory of dark matter-nucleon interactions

Cited by 14 publications

References 59 publications

Dark Matter through the Higgs portal

Dark Matter through the Higgs portal

Probing DAMA/LIBRA data in the full parameter space of WIMP effective models of inelastic scattering

Discriminating WIMP-nucleus response functions in present and future XENON-like direct detection experiments

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