Combined limits on WIMPs from the CDMS and EDELWEISS experiments

We propose an experiment to search for QCD axion and axionlike-particle dark matter. Nuclei that are interacting with the background axion dark matter acquire time-varying CP-odd nuclear moments such as an electric dipole moment. In analogy with nuclear magnetic resonance, these moments cause precession of nuclear spins in a material sample in the presence of an electric field. Precision magnetometry can be used to search for such precession. An initial phase of this experiment could cover many orders of magnitude in axionlike-particle parameter space beyond the current astrophysical and laboratory limits. And with established techniques, the proposed experimental scheme has sensitivity to QCD axion masses m a ≲ 10 −9 eV, corresponding to theoretically well-motivated axion decay constants f a ≳ 10 16 GeV. With further improvements, this experiment could ultimately cover the entire range of masses m a ≲ μ eV, complementary to cavity searches.

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“…(1). The amplitude of the resonant transverse magnetization increases linearly with time, in principle, up to the ALP coherence time τ a .…”

Section: Experimental Conceptmentioning

confidence: 99%

“…While the weakly interacting massive particle (WIMP) is a well-motivated candidate, it is heavily constrained by null results from a variety of experiments [1][2][3]. Further, the Large Hadron Collider has placed stringent constraints on scenarios such as supersymmetry that have provided the theoretical basis for WIMP dark matter [4].…”

Section: Introductionmentioning

confidence: 99%

Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr)

et al. 2014

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“…Moreover, several precision observables like the mass of the W boson and the effective weak mixing angle sin 2 θ eff , and some rare B-meson decay branching ratios are also sensitive to the parameters of SUSY models. On the other hand, SUSY particles have not been directly observed at colliders 1 and there is no convincing evidence for the existence of WIMPs from direct or indirect searches [40,41,43]. 2 The simplest supersymmetric extension of the SM is the Minimal Supersymmetric Standard Model (MSSM) [44][45][46].…”

Section: Jhep06(2012)098mentioning

confidence: 99%

Constrained supersymmetry after two years of LHC data: a global view with Fittino

Bechtle

Bringmann²,

Desch

et al. 2012

J. High Energ. Phys.

126

144

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Abstract:We perform global fits to the parameters of the Constrained Minimal Supersymmetric Standard Model (CMSSM) and to a variant with non-universal Higgs masses (NUHM1). In addition to constraints from low-energy precision observables and the cosmological dark matter density, we take into account the LHC exclusions from searches in jets plus missing transverse energy signatures with about 5 fb −1 of integrated luminosity. We also include the most recent upper bound on the branching ratio B s → µµ from LHCb. Furthermore, constraints from and implications for direct and indirect dark matter searches are discussed. The best fit of the CMSSM prefers a light Higgs boson just above the experimentally excluded mass. We find that the description of the low-energy observables, (g − 2) µ in particular, and the non-observation of SUSY at the LHC become more and more incompatible within the CMSSM. A potential SM-like Higgs boson with mass around 126 GeV can barely be accommodated. Values for B(B s → µµ) just around the Standard Model prediction are naturally expected in the best fit region. The most-preferred region is not yet affected by limits on direct WIMP searches, but the next generation of experiments will probe this region. Finally, we discuss implications from fine-tuning for the best fit regions.

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“…We also impose limits on the spin-independent neutralino-nucleon scattering cross section using the most recent experimental results [107][108][109][110][111].…”

Section: Jhep02(2014)048mentioning

confidence: 99%

“…The lightest neutralino, if light enough, is constrained by its contributions to the invisible Z and Higgs bosons decays. We also take into account experimental bounds on low energy observables [90][91][92][93][94][95][96][97][98][99][100][101][102][103][104] together with cosmological constraints on the dark matter abundance [105,106] and limits on its spinindependent elastic cross section with quarks from direct detection experiments [107][108][109][110][111]. Regarding the Higgs sector we impose the presence of a SM-like Higgs, which in our case corresponds to the second lightest mass state, in the range 123 GeV≤ m h 0 2 ≤ 127 GeV.…”

Section: Jhep02(2014)048mentioning

confidence: 99%

Collider signatures of a light NMSSM pseudoscalar in neutralino decays in the light of LHC results

Cerdeño

Ghosh

Park

et al. 2014

J. High Energ. Phys.

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We investigate signatures induced by a very light pseudoscalar Higgs in neutralino decays in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) and determine their observability at the LHC. We concentrate on scenarios which feature two light scalar Higgs bosons (one of them is SM-like with a mass of 125 GeV and a singlet-like lighter one) with a very light (singlet-like) pseudoscalar Higgs in the mass range 2m τ < m a 0 1 < 2m b . We consider neutralino-chargino pair production and the subsequent decay χ 0 2,3 → χ 0 1 a 0 1 , which leads to topologies involving multi-leptons and missing transverse energy. We determine a set of selection cuts that can effectively isolate the signal from backgrounds of the Standard Model or the Minimal Supersymmetric Standard Model. We also exemplify the procedure with a set of benchmark points, for which we compute the expected number of events and signal strength for LHC with 8 TeV center of mass energy. We show that this signal can already be probed for some points in the NMSSM parameter space.

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Combined limits on WIMPs from the CDMS and EDELWEISS experiments

Cited by 79 publications

References 28 publications

Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr)

Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr)

Constrained supersymmetry after two years of LHC data: a global view with Fittino

Collider signatures of a light NMSSM pseudoscalar in neutralino decays in the light of LHC results

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