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Studies of axion-like particles (ALPs) commonly focus on a single type of interaction, for example couplings only to photons. Most ALP models however predict correlations between different couplings, which change the phenomenology in…

High Energy Physics - Phenomenology · Physics 2020-07-15 Fatih Ertas , Felix Kahlhoefer

Axion-like particles (ALPs) are good candidates for mediators to the dark sector. We explore scenarios in which an ALP mediates interactions between dark matter and electroweak gauge bosons. These models yield testable electromagnetic…

High Energy Physics - Phenomenology · Physics 2024-05-31 Stephanie Allen , Albany Blackburn , Oswaldo Cardenas , Zoe Messenger , Ngan H. Nguyen , Brian Shuve

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

Experimental searches for axions or axion-like particles rely on semiclassical phenomena resulting from the postulated coupling of the axion to two photons. Sensitive probes of the extremely small coupling constant can be made by exploiting…

High Energy Physics - Experiment · Physics 2010-09-28 Aaron S. Chou

We propose the use of FASER as a light-shining-through-walls experiment to search for axions and axion-like particles (ALPs). LHC collisions generate a high intensity and high energy photon flux in the forward direction which can oscillate…

High Energy Physics - Phenomenology · Physics 2023-02-16 Felix Kling , Pablo Quílez

Axion-like particles (ALPs), hypothetical extensions of the Standard Model, can convert into photons in an external magnetic field. Two recent studies~\cite{Todarello:2023ptf, Ruz:2024gkl} explored the phenomenology of ALP-photon conversion…

High Energy Physics - Phenomenology · Physics 2025-01-28 Elisa Todarello

Axion-Like Particles (ALPs) are a generic, calculable, and well motivated extension of the Standard Model with far reaching phenomenology. ALPs that couple only to hypercharge represent one subset of such models, coupling the ALP to both…

High Energy Physics - Phenomenology · Physics 2021-09-15 Noah Steinberg , James D. Wells

Axionlike particles (ALPs) can be produced in the Sun, and are considered viable candidates for the cosmological dark matter (DM). It can decay into two photons or interact with matter. We identify new inelastic channels of inverse…

High Energy Physics - Phenomenology · Physics 2023-08-29 C. -P. Wu , C. -P. Liu , Greeshma C. , L. Singh , J. -W. Chen , H. -C. Chi , M. K. Pandey , H. T. Wong

The absence of conclusive signals in weakly interacting massive particle (WIMP) searches has motivated increased interest in alternative dark matter candidates such as axions and axion-like particles (ALPs), which also provide a solution to…

High Energy Physics - Experiment · Physics 2026-04-07 S. Sahoo , S. Verma , M. Mirzakhani , N. Mishra , A. Thompson , S. Maludze , R. Mahapatra , M. Platt

We have recently shown that axions and axion-like particles (ALPs) may emit an observable stochastic gravitational wave (GW) background when they begin to oscillate in the early universe. In this note, we identify the regions of ALP…

High Energy Physics - Phenomenology · Physics 2020-12-23 Camila S. Machado , Wolfram Ratzinger , Pedro Schwaller , Ben A. Stefanek

In this contribution, based on the discussion at a round table of the XIII Quark Confinement and the Hadron Spectrum - Confinement conference, we review the main properties of the QCD axion and, more generally, of axion-like particles and…

High Energy Physics - Phenomenology · Physics 2019-03-06 Paolo Di Vecchia , Maurizio Giannotti , Massimiliano Lattanzi , Axel Lindner

Axion-like particles (ALPs) are a common prediction of certain theories beyond the Standard Model and couple to photons in the presence of external magnetic fields. As a consequence, photon-ALP conversions could lead to an enhancement of…

High Energy Astrophysical Phenomena · Physics 2014-12-09 Manuel Meyer

Axion-like particles (ALPs) are hypothetical pseudoscalar bosons, natural in extensions of the Standard Model. Their interactions with ordinary matter and radiation are suppressed, making it challenging to detect them in laboratory…

High Energy Physics - Phenomenology · Physics 2025-03-27 S. V. Troitsky

Axion-like particles (ALPs) and heavy neutral leptons (HNLs) are two well-motivated classes of particles beyond the Standard Model. It is intriguing to explore the new detection opportunities that may arise if both particle types coexist.…

High Energy Physics - Phenomenology · Physics 2025-03-21 Marta Burgos Marcos , Arturo de Giorgi , Luca Merlo , Jean-Loup Tastet

Axion-like particles (ALPs) are very light, neutral, spin zero bosons predicted by many theories which try to complete the standard model of elementary particles. ALPs interact primarily with two photons and can generate photon-ALP…

High Energy Astrophysical Phenomena · Physics 2023-02-09 Giorgio Galanti

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) are very light, neutral, spin zero bosons predicted by superstring theory. ALPs interact primarily with two photons and in the presence of an external magnetic field they generate photon-ALP oscillations and the…

High Energy Physics - Phenomenology · Physics 2022-04-29 Giorgio Galanti

With the ability to see into optically obscured regions with more than an order of magnitude better sensitivity and spatial resolution relative to current (sub)mm telescopes, ALMA will provide a unique look into the physics of galaxy…

Astrophysics · Physics 2007-05-23 C. L. Carilli

Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-energy extensions of the Standard Model, which interact with the known particles through higher-dimensional operators suppressed by the mass scale $\Lambda$…

High Energy Physics - Phenomenology · Physics 2021-04-28 Martin Bauer , Matthias Neubert , Sophie Renner , Marvin Schnubel , Andrea Thamm

ALPs (Axion Like Particle) beyond the standard model are solutions to several important problems of modern physics. One way to detect these particles is to detect the new interactions they meditate. Many experiments have been performed to…

High Energy Physics - Phenomenology · Physics 2018-10-26 H. Yan , G. A. Sun , S. M. Peng , H. Guo , B. Q. Liu , M. Peng , H. Zheng