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The axion-like particle (ALP), a pseudo Nambu-Goldstone boson that couples to two photons, has been studied extensively in recent years as a dark matter candidate. For initial field configurations in a minimal ALP model explaining the…

High Energy Physics - Phenomenology · Physics 2025-12-04 Yuma Narita , Wen Yin

Axion-like particles (ALPs) coupled to nucleons can be efficiently produced in core-collapse supernovae (SNe) and then, if they couple to photons, convert into gamma rays in cosmic magnetic fields, generating short gamma-ray bursts. Though…

High Energy Physics - Phenomenology · Physics 2025-12-05 Francesca Lecce , Alessandro Lella , Giuseppe Lucente , Maurizio Giannotti , Alessandro Mirizzi

We study the discovery potential of axion-like particles (ALP), pseudo-scalars weakly coupled to Standard Model fields, at the Large Hadron Collider (LHC). Our focus is on ALPs coupled to the electromagnetic field, which would induce…

High Energy Physics - Phenomenology · Physics 2019-06-20 C. Baldenegro , S. Hassani , C. Royon , L. Schoeffel

We propose a magnetic resonance force microscopy (MRFM) search for axion dark matter around 1 GHz. The experiment leverages the axion's derivative coupling to electrons, which induces an effective A.C. magnetic field on a sample of electron…

High Energy Physics - Phenomenology · Physics 2026-02-02 Elham Kashi , Muhammad Hani Zaheer , Ryan Petery , Swati Singh

Axion-like particles (ALPs) are promising dark matter candidates. Their signals in direct detection experiments arise from the well-known inverse Primakoff effect or the inverse Compton scattering of the ALPs with the electron. In this…

High Energy Physics - Phenomenology · Physics 2023-11-17 Wei Chao , Jing-Jing Feng , Ming-Jie Jin

Axion-Like Particles (ALPs) are well-motivated candidates for dark matter and potential mediators to the dark sector. We present a search for ALPs coupled to photons, based on a reinterpretation of COMPASS data. Using the 2009 dataset…

High Energy Physics - Phenomenology · Physics 2026-04-23 Mehran Dehpour

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…

High Energy Physics - Phenomenology · Physics 2025-05-30 Elisa Todarello , Marco Regis

String scenarios typically not only predict axion-like particles (ALPs) but also significant amounts of ALP dark radiation originating from the decay of the inflaton or a more general modulus. In this paper, we study the decay of such…

High Energy Physics - Phenomenology · Physics 2022-06-15 Joerg Jaeckel , Wen Yin

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

It has been recently claimed by two different groups that the spectral modulation observed in gamma rays from Galactic pulsars and supernova remnants can be due to conversion of photons into ultra-light axion-like-particles (ALPs) in…

We review the physics case for very weakly coupled ultralight particles beyond the Standard Model, in particular for axions and axion-like particles (ALPs): (i) the axionic solution of the strong CP problem and its embedding in well…

High Energy Physics - Phenomenology · Physics 2013-10-07 A. Ringwald

The cosmological observations of gravitational lenses, cosmic microwave background, rotation speed of stars in galaxies confirm the existence of about 27% dark matter in the Universe. The nature of these particles is unknown, however, there…

High Energy Physics - Phenomenology · Physics 2024-01-08 Tetiana Obikhod , Ievgenii Petrenko

Axion-like particles (ALPs) with couplings to electromagnetism have long been postulated as extensions to the Standard Model. String theory predicts an "axiverse" of many light axions, some of which may make up the dark matter in the…

High Energy Physics - Phenomenology · Physics 2019-07-17 Zachary Bogorad , Anson Hook , Yonatan Kahn , Yotam Soreq

Ultralight axion-like particles are well-motivated relics that might compose the cosmological dark matter and source anomalous time-dependent magnetic fields. We report on terrestrial bounds from the Noble And Alkali Spin Detectors for…

High Energy Physics - Phenomenology · Physics 2025-09-26 Itay M. Bloch , Roy Shaham , Yonit Hochberg , Eric Kuflik , Tomer Volansky , Or Katz

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

A future Galactic Supernova (SN) explosion can lead to a gamma-ray signal induced by ultralight Axion-Like Particles (ALPs) thermally produced in the SN core and converted into high-energy photons in the Galactic magnetic field. The…

High Energy Astrophysical Phenomena · Physics 2024-02-13 Francesca Calore , Pierluca Carenza , Christopher Eckner , Maurizio Giannotti , Giuseppe Lucente , Alessandro Mirizzi , Francesco Sivo

Axion-like particles (ALPs) are undiscovered pseudo-scalar particles that are candidates for ultralight dark matter. ALPs interact with photons slightly and cause the rotational oscillation of linearly polarized light. Dark matter Axion…

Instrumentation and Detectors · Physics 2022-03-02 Hiroki Fujimoto , Yuka Oshima , Masaki Ando , Tomohiro Fujita , Yuta Michimura , Koji Nagano , Ippei Obata

We perform a linear mode analysis of a uniformly distributed cloud of axion-like particles (ALPs) embedded in a magnetized intergalactic medium, in order to investigate the stability of axion stars under realistic astrophysical conditions.…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-14 Kuldeep J. Purohit , Jitesh R. Bhatt , Subhendra Mohanty , Prashant K. Mehta

We propose a novel experimental scheme, called DAMSA (Dump-produced Aboriginal Matter Searches at an Accelerator), for searching for dark-sector particles, using rare nuclear isotope accelerator facilities that provide high-flux proton…

Burrage, Davis, and Shaw recently suggested exploiting the correlations between high and low energy luminosities of astrophysical objects to probe possible mixing between photons and axion-like particles (ALP) in magnetic field regions.…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-21 Guido Walter Pettinari , Robert Crittenden