First Results from a Microwave Cavity Axion Search at 
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Brubaker, Benjamin; Zhong, L.; Gurevich, Yulia V.; Cahn, S. B.; Lamoreaux, S. K.; Simanovskaia, Maria; Root, Jaben; Lewis, Samantha M.; Kenany, S. Al; Backes, Kelly; Urdinaran, I.; Rapidis, N. M.; Shokair, T. M.; Bibber, Karl A. van; Palken, Daniel; Malnou, M.; Kindel, William; Anıl, Mehmet Ali; Lehnert, K. W.; Carosi, G.

doi:10.1103/physrevlett.118.061302

Cited by 321 publications

(259 citation statements)

References 36 publications

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“…The central problem in detecting the axion however is that we do not know the frequency, ω m a (1 + v 2 /2) at which the electromagnetic response to the axion field should be monitored. To search for this frequency, haloscopes either enforce a resonance or constructive interference condition for a signal oscillating at ∼ m a (as in e.g., ADMX [116,117], MADMAX [118,119], HAYSTAC [120][121][122][123], CULTASK [124][125][126], OR-GAN [127,128], KLASH [129] and RADES [130]), or are sensitive to a wide bandwidth of frequencies simultaneously (e.g., ABRACADABRA [131][132][133], BEAST [134] and DM-Radio [135]). See Ref.…”

Section: Axion Searchesmentioning

confidence: 99%

Velocity substructure from Gaia and direct searches for dark matter

et al. 2020

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Data from the Gaia satellite show that the solar neighbourhood of the Milky Way's stellar halo is imprinted with substructure from several accretion events. Evidence of these events is found in "the Shards", stars clustering with high significance in both action space and metallicity. Stars in the Shards share a common origin, likely as ancient satellite galaxies of the Milky Way, so will be embedded in dark matter (DM) counterparts. These "Dark Shards" contain two substantial streams (S1 and S2), as well as several retrograde, prograde and lower energy objects. The retrograde stream S1 has a very high Earth-frame speed of ∼ 550 km s −1 while S2 moves on a prograde, but highly polar orbit and enhances peak of the speed distribution at around 300 km s −1 . The presence of the Dark Shards locally leads to modifications of many to the fundamental properties of experimental DM signals. The S2 stream in particular gives rise to an array of effects in searches for axions and in the time dependence of nuclear recoils: shifting the peak day, inducing non-sinusoidal distortions, and increasing the importance of the gravitational focusing of DM by the Sun. Dark Shards additionally bring new features for directional signals, while also enhancing the DM flux towards Cygnus.

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Section: Axion Searchesmentioning

confidence: 99%

Velocity substructure from Gaia and direct searches for dark matter

et al. 2020

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“…Fortunately, there are a number of running (ADMX [71], HAYSTAC [88], OR-GAN [89]), presently being assembled (CULTASK [72], QUAX [90]), or planned (ABRA-CADABRA [73], KLASH [91], MADMAX [74], ORPHEUS [92]) axion dark matter experiments, which cover a large portion of the mass range of interest for axion dark matter in the pre-inflationary PQ symmetry scenario in Model 2.1, see figure 12. Furthermore, in the meV mass range of interest for the post-inflationary PQ symmetry breaking scenario, the model can be probed by the presently being build fifth force experiment ARIADNE [75] and the proposed helioscope IAXO [76], cf.…”

Section: Jhep02(2018)103mentioning

confidence: 99%

Axion predictions in SO(10) × U(1)PQ models

Ernst

Ringwald

Tamarit

2018

J. High Energ. Phys.

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Non-supersymmetric Grand Unified SO(10) × U(1) PQ models have all the ingredients to solve several fundamental problems of particle physics and cosmologyneutrino masses and mixing, baryogenesis, the non-observation of strong CP violation, dark matter, inflation -in one stroke. The axion -the pseudo Nambu-Goldstone boson arising from the spontaneous breaking of the U(1) PQ Peccei-Quinn symmetry -is the prime dark matter candidate in this setup. We determine the axion mass and the low energy couplings of the axion to the Standard Model particles, in terms of the relevant gauge symmetry breaking scales. We work out the constraints imposed on the latter by gauge coupling unification. We discuss the cosmological and phenomenological implications.

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“…Dark matter (DM) is generally thought to be a stable particle (or particles) not part of the standard model; however, it has so far remained elusive [1][2][3][4][5][6][7]. Cosmologically, it is usually modeled as cold dark matter (CDM), which is part of the successful ΛCDM model that is consistent with observations of the cosmic microwave background (CMB) (e.g., [8]), cosmic shear surveys (e.g., [9]), measurements of the background expansion such as BAO probes [10], supernovae distance measurements [11], and the observed abundance of light elements [12].…”

mentioning

confidence: 99%

Dark Matter Equation of State through Cosmic History

et al. 2018

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Cold dark matter is a crucial constituent of the current concordance cosmological model. Having a vanishing equation of state (EOS), its energy density scales with the inverse cosmic volume and is thus uniquely described by a single number, its present abundance. We test the inverse cosmic volume law for dark matter (DM) by allowing its EOS to vary independently in eight redshift bins in the range z ¼ 10 5 and z ¼ 0. We use the latest measurements of the cosmic microwave background radiation from the Planck satellite and supplement them with baryon acoustic oscillation (BAO) data from the 6dF and SDSS-III BOSS surveys and with the Hubble Space Telescope (HST) key project data. We find no evidence for nonzero EOS in any of the eight redshift bins. With Planck data alone, the DM abundance is most strongly constrained around matter-radiation equality ω (95% C.L.), respectively. Our results constrain for the first time the level of "coldness" required of the DM across various cosmological epochs and show that the DM abundance is strictly positive at all times.

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First Results from a Microwave Cavity Axion Search at 24 μeV

Abstract: We report on the first results from a new microwave cavity search for dark matter axions with masses above 20 μeV. We exclude axion models with two-photon coupling g_{aγγ}≳2×10^{-14} GeV^{-1} over the range 23.55 Show more

Cited by 321 publications

References 36 publications

Velocity substructure from Gaia and direct searches for dark matter

Velocity substructure from Gaia and direct searches for dark matter

Axion predictions in SO(10) × U(1)PQ models

Dark Matter Equation of State through Cosmic History

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