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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

The production of axionlike particles (ALPs) with small masses in ultraperipheral $Pb - p$ and $Pb - Pb$ collisions at the LHC is investigated. The cross section and kinematical distributions associated to the diphoton final state produced…

High Energy Physics - Phenomenology · Physics 2021-07-07 V. P. Goncalves , D. E. Martins , M. S. Rangel

The current status and future prospects of searches for axion-like particles (ALPs) at colliders, mostly focused on the CERN LHC, are summarized. Constraints on ALPs with masses above a few GeV that couple to photons, as well as to Z or…

High Energy Physics - Experiment · Physics 2021-02-25 David d'Enterria

We investigate the production of axion-like particles (ALPs) in stellar cores, where they interact with electromagnetic fields and electrons, with typical masses between $\mathcal O(0.1)$ and $\mathcal O(10)$ keV. These low-energy ALPs are…

High Energy Astrophysical Phenomena · Physics 2025-06-13 Yu-Xuan Chen , Lei Lei , Zi-Qing Xia , Ziwei Wang , Yue-Lin Sming Tsai , Yi-Zhong Fan

Axion-like particles (ALPs) arise naturally in many extensions of the Standard Model (SM). We explore the discovery potential for ALPs of the Large Hadron electron Collider (LHeC) via the $W^{+}W^{-}$ fusion process. For concreteness, both…

High Energy Physics - Phenomenology · Physics 2023-06-28 Chong-Xing Yue , Han Wang , Xue-Jia Cheng , Yue-Qi Wang

Axionlike particles (ALPs) emerge from spontaneously broken global symmetries in high energy extensions of the Standard Model (SM). This causes ALPs to be among the objectives of future experiments which intend to search for new physics…

High Energy Physics - Phenomenology · Physics 2022-08-23 Yasaman Hosseini , Mojtaba Mohammadi Najafabadi

In this work, prospects to probe an overlooked facet of axion-like particles (ALPs) -- their potential couplings to sterile neutrinos -- are presented. We found that mono-photon searches have the potential to constrain ALP couplings to…

High Energy Physics - Phenomenology · Physics 2020-08-18 Alexandre Alves , Alex G. Dias , Diego D. Lopes

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

New pseudo-scalars, often called axion-like particles (ALPs), abound in model-building and are often associated with the breaking of a new symmetry. Traditional searches and indirect bounds are limited to light axions, typically in or below…

High Energy Physics - Phenomenology · Physics 2015-06-11 Ken Mimasu , Verónica Sanz

Axion-like particles (ALP) are promising candidates to comprise all the dark matter in the universe. We investigate the ALP couplings to photons and electrons via astrophysical measurements through the search for very-high-energy gamma rays…

High Energy Astrophysical Phenomena · Physics 2025-01-23 Victor P. Goncalves , Emmanuel Moulin , Igor Reis , Aion Viana

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 possibility of searching for long-lived axion-like particles (ALPs) decaying into photons is investigated in ultraperipheral $PbPb$ collisions at the Large Hadron Collider (LHC). We propose a search strategy for low mass ALPs using the…

High Energy Physics - Phenomenology · Physics 2025-01-27 Pedro Nogarolli , Victor P. Gonçalves , Murilo S. Rangel

Assuming ALPs couple to gluons only, they can be produced via the $p p \to a j$ process and decay into two jets at the LHC. When the coupling parameter, $C_{\tilde{G}} / f_a$, is small, the lifetime of ALPs can be long enough leading to…

High Energy Physics - Phenomenology · Physics 2022-08-01 Filmon Andom Ghebretinsaea , Zeren Simon Wang , Kechen Wang

Axion-like particles (ALPs) are pseudo Nambu-Goldstone bosons associated with spontaneously broken global symmetries emerging in many extensions of the Standard Model. Assuming the most general effective Lagrangian up to dimension-5…

High Energy Physics - Phenomenology · Physics 2020-12-08 Gholamhossein Haghighat , Daruosh Haji Raissi , Mojtaba Mohammadi Najafabadi

The virtual production of axion-like particles (ALPs) in the light-by-light scattering at the CLIC collider is studied. Both differential and total cross sections are calculated, assuming interaction of the ALP with photons via CP-odd term…

High Energy Physics - Phenomenology · Physics 2020-07-15 S. C. Inan , A. V. Kisselev

X-ray observations of bright AGNs in or behind galaxy clusters offer unique capabilities to constrain axion-like particles (ALPs). Existing analysis technique rely on measurements of the global goodness-of-fit. We develop a new analysis…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-30 Joseph P. Conlon , Markus Rummel

Axion-like particles (ALPs) decaying into photons are known to affect a wide range of astrophysical and cosmological observables. In this study we focus on ALPs with masses in the keV-MeV range and lifetimes between $10^4$ and $10^{13}$…

Axion-like particles (ALPs) are well-motivated extensions of the Standard Model (SM) that appear in many new physics scenarios, with masses spanning a broad range. In this work, we systematically study the production and detection prospects…

High Energy Physics - Phenomenology · Physics 2025-10-22 Shou-shan Bao , Yang Ma , Yongcheng Wu , Keping Xie , Hong Zhang

New pseudoscalars, axion-like particles (ALPs), provide the exciting target for present and future collider-based experiments. Search for ALPs is performed in this paper via the $W^{+}W^{-}$ fusion process…

High Energy Physics - Phenomenology · Physics 2023-12-08 Chong-Xing Yue , Han Wang , Yue-Qi Wang

We derive updated cosmological bounds on light axion-like particles (ALPs) coupled to leptons or photons, using a full phase-space treatment of their production from the primordial thermal plasma. The ALP phase-space distribution, obtained…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-12 Nicola Barbieri , Luca Caloni , Martina Gerbino , Massimiliano Lattanzi , Luca Visinelli