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Axion-like particles (ALPs) are attracting increasing interest since, among other things, they are a prediction of many extensions of the standard model of elementary particles physics and in particular of superstrings and superbranes.…

High Energy Astrophysical Phenomena · Physics 2019-07-23 Giorgio Galanti , Marco Roncadelli

We study cross correlations between line intensity and weak lensing maps to search for axion-like particles (ALPs). Radiative decay of eV-mass ALPs can contribute to cosmic background emissions at optical and infrared wavelengths. Line…

Cosmology and Nongalactic Astrophysics · Physics 2021-05-26 Masato Shirasaki

Assuming the existence of an axion-like particle (ALP), beams of relativistic particles emit fluxes of quasi-real ALPs, analogous to the photon fluxes described by Weizs\"acker-Williams-type approximations. Consequently, ALP-ALP and…

High Energy Physics - Phenomenology · Physics 2025-11-04 Sergio Barbosa , Matheus Coelho , Sylvain Fichet , Gustavo Gil da Silveira , Magno Machado

We presented a complete calculation of the one-loop fermionic correction to the effective coupling between axion-like particles (ALPs) and photons within a constant, homogeneous magnetic field of arbitrary strength. This interaction,…

High Energy Physics - Phenomenology · Physics 2026-02-04 Ozan Semin

Axion-like particles are hypothetical new light (sub-eV) bosons predicted in some extensions of the Standard Model of particle physics. In astrophysical environments comprising high-energy gamma rays and turbulent magnetic fields, the…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Pierre Brun , Denis Wouters

We provide an introduction to searches for axions and Axion-Like Particles (ALPs) at colliders. After covering the basics of collider physics, with a focus on production and detection of new particles, we give a rather broad introduction…

High Energy Physics - Phenomenology · Physics 2025-05-02 Michele Tammaro , Jure Zupan

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…

High Energy Physics - Phenomenology · Physics 2017-01-04 W. J. Marciano , A. Masiero , P. Paradisi , M. Passera

Axion-like particles (ALPs) are a common prediction of several extensions of the Standard Model of particle physics and could be detected through their coupling to photons, which enables ALP-photon conversions in external magnetic fields.…

High Energy Astrophysical Phenomena · Physics 2025-09-30 Francesco Schiavone , Leonardo Di Venere , Francesco Giordano

X-ray telescopes are an exceptional tool for searching for new fundamental physics. In particular, X-ray observations have already placed world-leading bounds on the interaction between photons and axion-like particles (ALPs). ALPs are…

High Energy Physics - Phenomenology · Physics 2018-04-11 Francesca Day , Sven Krippendorf

We propose a new search for Axion-Like Particles (ALPs), targeting Vector Boson Scattering (VBS) processes at the LHC. We consider nonresonant ALP-mediated VBS, where the ALP participates as an off-shell mediator. This process occurs…

High Energy Physics - Phenomenology · Physics 2022-06-23 J. Bonilla , I. Brivio , J. Machado-Rodríguez , J. F. de Trocóniz

In quantum field theory, bare particles are dressed by a cloud of virtual particles to form physical particles. The virtual particles affect properties such as the mass and charge of the physical particles, and it is only these modified…

We propose a new method to search for axion-like particles (ALPs) based on the gamma-rays produced concomitant with high-energy astrophysical neutrinos. The existence of high-energy neutrinos implies production of gamma-rays in the same…

High Energy Physics - Phenomenology · Physics 2017-12-07 Hendrik Vogel , Ranjan Laha , Manuel Meyer

We construct the generating functional of two flavor chiral perturbation theory including the effects of virtual photons in the one loop approximation. As an application, we calculate the electromagnetic corrections to the elastic $\pi\pi$…

High Energy Physics - Phenomenology · Physics 2009-10-30 Ulf-G. Meißner , G. Müller , S. Steininger

In this work we consider searches for dark matter made of axions or axion-like particles (ALPs) using resonant radio frequency cavities inserted into dipole magnets from particle accelerators, wiggler magnets developed for accelerator based…

We present some bottom-up motivations of axions and other weakly interacting sub-eV particles (WISPs) coupling to photons. Typically, these light particles are strongly constrained by their production or interaction in astrophysical and…

High Energy Physics - Phenomenology · Physics 2009-10-13 Markus Ahlers

We propose that axion-like particles (ALPs) with a two-photon vertex, consistent with all astrophysical and laboratory bounds, may lead to a detectable signature in the spectra of high-energy gamma ray sources. This occurs as a result of…

High Energy Physics - Phenomenology · Physics 2008-11-26 Dan Hooper , Pasquale D. Serpico

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…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-16 Shivani Deshmukh , Aritra Basu , Dominik J. Schwarz , Yuko Urakawa , Sui Ann Mao

Oscillations from high energy photons into light pseudoscalar particles in an external magnetic field are expected to occur in some extensions of the standard model. It is usually assumed that those axionlike particles (ALPs) could produce…

High Energy Astrophysical Phenomena · Physics 2012-09-13 Denis Wouters , Pierre Brun

The mixing of photons with axion-like particles (ALPs) in the large-scale magnetic field $B$ changes the polarization angle of a linearly polarized photon beam from active galactic nuclei in radio galaxies as it propagates over cosmological…

High Energy Astrophysical Phenomena · Physics 2012-06-13 D. Horns , L. Maccione , A. Mirizzi , M. Roncadelli

We perform a feasibility study to search for axion-like particles (ALPs) using vector boson fusion (VBF) processes at the LHC. We work in an effective field theory framework with cutoff scale $\Lambda$ and ALP mass $m_{a}$, and assume that…

High Energy Physics - Phenomenology · Physics 2021-05-12 Andrés Flórez , Alfredo Gurrola , Will Johns , Paul Sheldon , Elijah Sheridan , Kuver Sinha , Brandon Soubasis