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Reactor neutrino experiments provide a rich environment for the study of axionlike particles (ALPs). Using the intense photon flux produced in the nuclear reactor core, these experiments have the potential to probe ALPs with masses below 10…

High Energy Physics - Phenomenology · Physics 2020-11-05 D. Aristizabal Sierra , V. De Romeri , L. J. Flores , D. K. Papoulias

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…

High Energy Astrophysical Phenomena · Physics 2025-11-11 Qiu-Ju Huang , Bao Wang , Jun-Jie Wei , Xue-Feng Wu

Axion-like particles $a$ (ALPs) that couple to the Standard Model (SM) gauge fields could be observed in the high-energy photon scattering $\gamma N\to N a$ off nuclei followed by the $a\to \gamma\gamma$ decay. In the present paper we…

High Energy Physics - Phenomenology · Physics 2020-10-07 R. R. Dusaev , D. V. Kirpichnikov , M. M. Kirsanov

Axion-Like Particles (ALPs) coupled with electrons would be produced in a Supernova (SN) via electron-proton bremsstrahlung and electron-positron fusion. We evaluate the ALP emissivity from these processes by taking into account the ALP…

High Energy Physics - Phenomenology · Physics 2021-11-16 Giuseppe Lucente , Pierluca Carenza

Axion-like particles (ALPs) interacting with the Standard Model can be abundantly produced in proton beam fixed-target experiments. Looking for their displaced decays is therefore an effective search strategy for ALPs with a mass in the MeV…

High Energy Physics - Phenomenology · Physics 2022-02-08 Nikita Blinov , Elizabeth Kowalczyk , Margaret Wynne

We revisit the limit on very light axion-like particles (ALPs) from the absence of gamma rays coincidental with the neutrino burst from SN1987A. We use updated supernova simulations, modern models for the magnetic field inside the Galaxy,…

High Energy Astrophysical Phenomena · Physics 2014-10-17 Alexandre Payez

The axion-like particle (ALP) is a well motivated new particle candidate of beyond the Standard Model. In this work, we propose to probe the ALP through the photon fusion scattering at the upcoming Electron-Ion Collider (EIC) with electron…

High Energy Physics - Phenomenology · Physics 2023-03-29 Yandong Liu , Bin Yan

The primordial black holes (PBHs) play as a novel source to radiate light elementary particles of energies in the region of a few hundred MeV. We explore the possibility that the axion-like particles (ALPs) with mass less than 1 MeV are…

High Energy Physics - Phenomenology · Physics 2022-12-07 Tong Li , Rui-Jia Zhang

We report on the results of the first search for the production of axion-like particles (ALP) via Primakoff production on nuclear targets using the GlueX detector. This search uses an integrated luminosity of 100 pb$^{-1}\cdot$nucleon on a…

Axion-like particles (ALPs) are predicted by many extensions of the Standard Model (SM). When ALP mass lies in the range of MeV to GeV, the cosmology and astrophysics will be largely irrelevant. In this work, we investigate such light ALPs…

High Energy Physics - Phenomenology · Physics 2021-12-01 Daohan Wang , Lei Wu , Jin Min Yang , Mengchao Zhang

We propose simple scenarios where the observed dark matter abundance arises from decays and scatterings of heavy quarks through freeze-in of an axion-like particle with mass in the $10 {\rm \, keV} - 1 {\rm \, MeV}$ range. These models can…

High Energy Physics - Phenomenology · Physics 2024-04-19 Mohammad Aghaie , Giovanni Armando , Angela Conaci , Alessandro Dondarini , Peter Matak , Paolo Panci , Zuzana Sinska , Robert Ziegler

Non-relativistic QCD axions or axion-like particles are among the most popular candidates for cold Dark Matter (DM) in the universe. We proposed to detect axion-like DM, using linearly polarized pulsar light as a probe. Because of…

Cosmology and Nongalactic Astrophysics · Physics 2020-03-18 Tao Liu , George Smoot , Yue Zhao

We demonstrate that the scatter in the luminosity relations of astrophysical objects can be used to search for axion-like-particles (ALPs). This analysis is applied to observations of active galactic nuclei, where we find evidence strongly…

Cosmology and Nongalactic Astrophysics · Physics 2009-06-30 Clare Burrage , Anne-Christine Davis , Douglas J. Shaw

We propose a variation, based on very low energy and extremely intense photon sources, on the well established technique of Light-Shining-through-Wall (LSW) experiments for axion-like particle searches. With radiation sources at 30 GHz, we…

High Energy Physics - Phenomenology · Physics 2016-02-01 L. Capparelli , G. Cavoto , J. Ferretti , F. Giazotto , A. D. Polosa , P. Spagnolo

The axion-like particles $a$ can be produced in the Sun via the process of $p + D \to {}^3{\rm He} +a$, with mass up to 5.5 MeV. The photons in the subsequent decay $a \to \gamma\gamma$ can deviate significantly from the Sun, or even from…

High Energy Physics - Phenomenology · Physics 2026-04-21 Yu-Cheng Qiu , Yongchao Zhang

Axion-like particles (ALPs) can couple to photons in strong magnetic fields, producing characteristic fluctuations in X-ray spectra. Using data from NASA's Neutron Star Interior Composition Explorer (NICER), we analyzed three pulsars: PSR…

High Energy Astrophysical Phenomena · Physics 2026-02-10 Yen-Jhen Liu , Yi Yang

Searches for pseudoscalar axion-like-particles (ALPs) typically rely on their decay in beam dumps or their conversion into photons in haloscopes and helioscopes. We point out a new experimental direction for ALP probes through their…

High Energy Physics - Phenomenology · Physics 2020-06-24 James B. Dent , Bhaskar Dutta , Doojin Kim , Shu Liao , Rupak Mahapatra , Kuver Sinha , Adrian Thompson

Axions are hypothetical particles, proposed to account for the invariance of CP symmetry in quantum chromodynamics. While axions and axion-like-particles are well-motivated by string theory and beyond-Standard-Model extensions, they have…

We present new exclusion bounds obtained at the European X-ray Free Electron Laser facility (EuXFEL) on axion-like particles (ALPs) in the mass range 10^{-3} eV < m_a < 10^4 eV. Our experiment exploits the Primakoff effect via which photons…

Strong mixing between photons and axion-like particles in the magnetic fields of clusters of galaxies induces a scatter in the observed luminosities of compact sources in the cluster. This is used to construct a new test for axion-like…

High Energy Physics - Phenomenology · Physics 2009-12-10 Clare Burrage , Anne-Christine Davis , Douglas J. Shaw