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We report on a search for dark matter axion-like particles (ALPs) using a Ramsey-type apparatus for cold neutrons. A hypothetical ALP-gluon-coupling would manifest in a neutron electric dipole moment signal oscillating in time. Twenty-four…

We report on a search for ultra-low-mass axion-like dark matter by analysing the ratio of the spin-precession frequencies of stored ultracold neutrons and $^{199}$Hg atoms for an axion-induced oscillating electric dipole moment of the…

高能物理 - 实验 · 物理学 2018-05-28 N. J. Ayres

A tool that can constrain, in minutes, beyond-the-standard-model parameters like electric dipole moments (EDM) down to a lower-bound $d_\text{e}^{\cal{N}}<10^{-37}\text{e}\cdot\text{cm}$ in bulk materials, or the coupling of axion-like…

天体物理仪器与方法 · 物理学 2016-04-11 Gary Prezeau

In this article, we present projected 95\% C.L. limits on Axion-Like Particle (ALP) couplings from ALP production at a future $e^+e^-$ collider operating at $\sqrt{s} = 250~\text{GeV}$ with integrated luminosity $L = 0.5~\text{ab}^{-1}$. We…

高能物理 - 唯象学 · 物理学 2026-05-28 Pramod Sharma , Soham Singh , Mukesh Kumar , Ashok Goyal

Several laboratory experiments have published limits on axionlike particles (ALPs) with feeble couplings to electrons and masses in the keV-MeV range, under the assumption that such ALPs comprise the dark matter. We note that ALPs decay…

高能物理 - 唯象学 · 物理学 2022-06-15 Ricardo Z. Ferreira , M. C. David Marsh , Eike Müller

Decaying axion-like particles (ALP) with masses in the eV range which might occupy dark matter halos of the Milky Way and other galaxies produce a characteristic "bump" feature in the spectrum of extragalactic background light (EBL). This…

高能物理 - 唯象学 · 物理学 2020-04-20 A. Korochkin , A. Neronov , D. Semikoz

Bounds are derived on the axion-like particle (ALP) to two-photon coupling in the mass range $2.65-5.27$ eV. The bounds are obtained by searching for the signal from ALP decay in the Multi Unit Spectroscopic Explorer (MUSE) observations of…

宇宙学与河外天体物理 · 物理学 2023-10-04 Elisa Todarello

We report on a broadband search for axion-like-particle (ALP) interactions using a radio-frequency-operated $^{87}\mathrm{Rb}$ atomic magnetometer. The instrument provides wide spectral coverage and sensitivity to an oscillating…

原子物理 · 物理学 2026-03-31 A. Rigoulet , S. Nanos , I. K. Kominis , D. Antypas

We study axion-like particles (ALPs) whose dominant interactions are with gluons and third-generation quarks, and whose couplings to light Standard Model (SM) particles arise at one loop. These loop-induced effects lead to ALP decays and…

高能物理 - 唯象学 · 物理学 2025-09-01 Jon Butterworth , Matthew Cullingworth , Joseph Egan , Fabian Esser , Veronica Sanz , Maria Ubiali

Axion-like particles (ALPs) arise from well-motivated extensions to the Standard Model and could account for dark matter. ALP dark matter would manifest as a field oscillating at an (as of yet) unknown frequency. The frequency depends…

Axions or axion-like particles (ALPs) are well-motivated dark matter (DM) candidates whose coupling to photons induces periodic oscillations in the polarization angle of astrophysical light. This work reports the first search for such a…

高能天体物理现象 · 物理学 2025-11-11 Qiu-Ju Huang , Bao Wang , Jun-Jie Wei , Xue-Feng Wu

Contributions of a spin 0 axion-like particle (ALP) to lepton dipole moments, g-2 and EDMs, are examined. Barr-Zee and light-by-light loop effects from a light pseudoscalar ALP are found to be capable of resolving the long-standing muon g-2…

高能物理 - 唯象学 · 物理学 2017-01-04 W. J. Marciano , A. Masiero , P. Paradisi , M. Passera

Axion-like particles (ALPs) can decay into two photons with a rest-frame frequency given by half of the ALP mass. This implies that ultra-violet searches can be used to investigate ALPs in the multi-eV mass range. We use archival data from…

高能物理 - 唯象学 · 物理学 2025-05-30 Elisa Todarello , Marco Regis

In this work we revisit five different point sources within or behind galaxy clusters in order to constrain the coupling constant between axion-like particles (ALPs) and photons. We use three distinct machine learning (ML) techniques and…

宇宙学与河外天体物理 · 物理学 2022-06-15 Simon Schallmoser , Sven Krippendorf , Francesca Chadha-Day , Jochen Weller

Axion Like Particles (ALPs) are one promising kind of dark matter candidate particles that are predicted to couple with photons in the presence of magnetic fields. The oscillations between photons and ALPs travelling in the magnetic fields…

高能天体物理现象 · 物理学 2019-11-06 Jia Bu , Ya-Ping Li

We present new constraints on ultralight axion-like particles (ALPs) through multi-epoch measurements of differential birefringence induced due to a coupling ($g_{a\gamma}$) between the ALP and electromagnetic fields. Broadband polarimetric…

宇宙学与河外天体物理 · 物理学 2026-02-16 Shivani Deshmukh , Aritra Basu , Dominik J. Schwarz , Yuko Urakawa , Sui Ann Mao

We study the collider phenomenology of leptophilic axion-like particles (ALPs), i.e. pseudoscalar particles that couple only to charged leptons. Loops of charged leptons induce effective interactions of the ALPs with photons, which depend…

高能物理 - 唯象学 · 物理学 2025-11-11 Alexander Eberhart , Marco Fedele , Felix Kahlhoefer , Eike Ravensburg , Robert Ziegler

We have examined the sensitivity to the axion-like particle (ALP) couplings to electroweak gauge bosons in the diphoton production at a future muon collider. The collisions at the $\mu^+ \mu^-$ energies of 3 TeV, 14 TeV, and 100 TeV are…

高能物理 - 唯象学 · 物理学 2022-07-08 S. C. İnan , A. V. Kisselev

We report on a search for ultra-low-mass axion-like dark matter by analysing the ratio of the spin-precession frequencies of stored ultracold neutrons and $^{199}$Hg atoms for an axion-induced oscillating electric dipole moment of the…

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