Axion Search with a Quantum-Limited Ferromagnetic Haloscope

Crescini, N.; Alesini, D.; Braggio, C.; Carugno, G.; D’Agostino, D.; Gioacchino, D. Di; Falferi, P.; Gambardella, U.; Gatti, C.; Iannone, G.; Ligi, C.; Lombardi, A.; Ortolan, A.; Pengo, R.; Ruoso, G.; Taffarello, L.

doi:10.1103/physrevlett.124.171801

Cited by 135 publications

(104 citation statements)

References 54 publications

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“…Such an ALP is invisible to axion DM haloscopes, such as ADMX [116], which are sensitive only to the ALP-photon coupling, and masses m 1 eV. It is also invisible to the QUAX haloscope [117], which probes the axion-electron coupling, but is also only sensitive to very low ALP masses. If the XENON1T DM ALP exists, however, it could be part of a larger ALP sector.…”

Section: Jhep05(2021)159mentioning

confidence: 99%

Global fits of axion-like particles to XENON1T and astrophysical data

Athron

Balázs

Beniwal

et al. 2021

J. High Energ. Phys.

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The excess of electron recoil events seen by the XENON1T experiment has been interpreted as a potential signal of axion-like particles (ALPs), either produced in the Sun, or constituting part of the dark matter halo of the Milky Way. It has also been explained as a consequence of trace amounts of tritium in the experiment. We consider the evidence for the solar and dark-matter ALP hypotheses from the combination of XENON1T data and multiple astrophysical probes, including horizontal branch stars, red giants, and white dwarfs. We briefly address the influence of ALP decays and supernova cooling. While the different datasets are in clear tension for the case of solar ALPs, all measurements can be simultaneously accommodated for the case of a sub-dominant fraction of dark-matter ALPs. Nevertheless, this solution requires the tuning of several a priori unknown parameters, such that for our choices of priors a Bayesian analysis shows no strong preference for the ALP interpretation of the XENON1T excess over the background hypothesis.

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Section: Jhep05(2021)159mentioning

confidence: 99%

Global fits of axion-like particles to XENON1T and astrophysical data

Athron

Balázs

Beniwal

et al. 2021

J. High Energ. Phys.

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“…The most exploited detection principle of axions and ALPs is the haloscope proposed by Sikivie [14,15], whose description is addressed in a review: [16]. Examples of running experiments, also shown by the vertical lines in Figure 1, are ADMX [17,18], HAYSTAC [19], CAPP-8T [20], CAPP-9T [21], ORGAN [22], and QUAX [23][24][25][26]; other proposed experiments include RADES [27,28], MADMAX [29], BRASS [30], and KLASH [31][32][33].…”

Section: Introduction 1detection Of Axionsmentioning

confidence: 99%

Josephson Junctions as Single Microwave Photon Counters: Simulation and Characterization

et al. 2021

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Detection of light dark matter, such as axion-like particles, puts stringent requirements on the efficiency and dark-count rates of microwave-photon detectors. The possibility of operating a current-biased Josephson junction as a single-microwave photon-detector was investigated through numerical simulations, and through an initial characterization of two Al junctions fabricated by shadow mask evaporation, done in a dilution refrigerator by measuring escape currents at different temperatures, from 40 mK up to the Al transition temperature. The escape dynamics of the junctions were reproduced in the simulation, including the dissipative effects. Inhibition of thermal activation was observed, leaving the macroscopic quantum tunneling as the dominant effect well beyond the crossover temperature.

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“…Axions are another class of particle that has garnered interest both in solving the strong CP problem and as a dark matter candidate [10][11][12]. The pseudoscalar coupling of axions to matter dictates searches for odd parity signals such as permanent electric dipole moments of the neutron or electron [13,14], conversion of axions to photons in a strong magnetic field [15,16], nuclear recoils [17], and axions coupling to electron spin-flips [18][19][20][21].…”

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confidence: 99%

Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons

et al. 2020

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We conduct frequency comparisons between a state-of-the-art strontium optical lattice clock, a cryogenic crystalline silicon cavity, and a hydrogen maser to set new bounds on the coupling of ultralight dark matter to Standard Model particles and fields in the mass range of 10 −16 − 10 −21 eV. The key advantage of this two-part ratio comparison is the differential sensitivities to time variation of both the fine-structure constant and the electron mass, achieving a substantially improved limit on the moduli of ultralight dark matter, particularly at higher masses than typical atomic spectroscopic results. Furthermore, we demonstrate an extension of the search range to even higher masses by use of dynamical decoupling techniques. These results highlight the importance of using the best performing atomic clocks for fundamental physics applications as all-optical timescales are increasingly integrated with, and will eventually supplant, existing microwave timescales.

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Axion Search with a Quantum-Limited Ferromagnetic Haloscope

Cited by 135 publications

References 54 publications

Global fits of axion-like particles to XENON1T and astrophysical data

Global fits of axion-like particles to XENON1T and astrophysical data

Josephson Junctions as Single Microwave Photon Counters: Simulation and Characterization

Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons

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