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The existence of an axion-like particle (ALP) would induce anomalous scattering of light by light. This process can be probed at the Large Hadron Collider in central exclusive production of photon pairs in proton-proton collisions by…

High Energy Physics - Phenomenology · Physics 2018-08-01 Cristian Baldenegro , Sylvain Fichet , Gero von Gersdorff , Christophe Royon

Axion Like Particles (ALPs) can be produced in Gamma Ray Bursts, altering the polarization of the electromagnetic emission in these events. For the first time, we derive bounds on the axion-photon coupling from polarization measurements of…

High Energy Physics - Phenomenology · Physics 2025-06-10 Boris Betancourt Kamenetskaia , Nissim Fraija , Gonzalo Herrera

Ultra-light bosons such as axions or axion-like particles (ALPs), are promising candidates to solve the dark matter problem. A unique way to detect such ALPs is to search for the periodic oscillation feature of the position angles of…

High Energy Astrophysical Phenomena · Physics 2023-02-22 Guan-Wen Yuan , Ziqing Xia , Chengfeng Tang , Yaqi Zhao , Yi-Fu Cai , Yifan Chen , Jing Shu , Qiang Yuan

Axion-like particles (ALPs) appear from spontaneous global symmetry breaking in many extensions of the Standard Model (SM). In this paper, we find bounds on ALP ($a$) model parameters at the LHC from the ALP production associated with a…

High Energy Physics - Phenomenology · Physics 2019-07-24 Javad Ebadi , Sara Khatibi , Mojtaba Mohammadi Najafabadi

The optical dump at the LUXE experiment has the potential to create a large flux of $\mathcal{O}({\rm GeV})$ photons that can be used to look for new physics when directed at a solid material dump. The LUXE-NPOD extension of LUXE, which…

High Energy Physics - Phenomenology · Physics 2025-12-16 Noam Ness , Barry Cimring

We use our recent electric dipole moment (EDM) measurement data to constrain the possibility that the HfF$^+$ EDM oscillates in time due to interactions with candidate dark matter axion-like particles (ALPs). We employ a Bayesian analysis…

The Universe opacity to gamma rays is still an open question, in particular anomalies may have been observed. Assuming that such anomalies find their origin in conventional physics like intrinsic source spectra or the density of the…

High Energy Astrophysical Phenomena · Physics 2014-02-19 D. Wouters , P. Brun

We propose using the upcoming Cosmic Microwave Background (CMB) ground based experiments to detect the signal of ALPs (Axion like particles) interacting with magnetic fields in galaxy clusters. The conversion between CMB photons and ALPs in…

Cosmology and Nongalactic Astrophysics · Physics 2020-03-02 Suvodip Mukherjee , David N. Spergel , Rishi Khatri , Benjamin D. Wandelt

Astrophysical gamma-ray sources come in a variety of sizes and magnetizations. We deduce general conditions under which gamma-ray spectra from such sources would be significantly affected by axion-photon mixing. We show that, depending on…

Astrophysics · Physics 2008-11-26 Kathrin A. Hochmuth , Guenter Sigl

Axion-like particles (ALPs) may be abundantly produced in core-collapse (CC) supernovae (SNe), hence the cumulative signal from all past SN events can create a diffuse flux peaked at energies of about 25~MeV. We improve upon the modeling of…

Axion-Like Particles (ALPs) appear in several dark sector studies. They have gained increasing attention from the theoretical and experimental community. In this work, we propose the first search for ALPs to be conducted at the Brazilian…

High Energy Physics - Phenomenology · Physics 2023-05-24 L. Angel , P. Arias , C. O. Dib , A. S. de Jesus , S. Kuleshov , V. Kozhuharov , L. Lin , M. Lindner , F. S. Queiroz , R. C. Silva , Y. Villamizar

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 existence of axion-like particles (ALPs) can be probed from their signatures in the Cosmic Microwave Background (CMB) due to the photon-ALP resonant conversion over the mass range of ALPs that matches with the effective mass of photons…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-22 Harsh Mehta , Suvodip Mukherjee

Many extensions of the Standard Model predict the existence of ALPs, which are very light spin-zero bosons with a two-photon coupling. Photon-ALP oscillations occur in the presence of an external magnetic field, and ALPs can lead to…

High Energy Astrophysical Phenomena · Physics 2015-03-19 Alessandro De Angelis , Giorgio Galanti , Marco Roncadelli

There exists a growing evidence for the anomalous transparency of the Universe for energetic gamma rays. Popular explanations include conversion of photons into hypothetical axion-like particles (ALPs) and back in astrophysical magnetic…

High Energy Astrophysical Phenomena · Physics 2016-02-17 Sergey Troitsky

We study the collider phenomenology of leptophilic axion-like particles (ALPs), i.e. pseudoscalar particles that couple only to charged leptons. Loops of charged leptons induce effective interactions of the ALPs with photons, which depend…

High Energy Physics - Phenomenology · Physics 2025-11-11 Alexander Eberhart , Marco Fedele , Felix Kahlhoefer , Eike Ravensburg , Robert Ziegler

We present the limits on photon to axionlike particle (ALP) coupling from the 10-year period observations of the TeV BL Lacertae blazar 1ES 1215+303 (with redshift $z=0.130$). The contemporaneous gamma-ray spectra are measured by the…

High Energy Astrophysical Phenomena · Physics 2024-02-14 Hai-Jun Li , Wei Chao , Yu-Feng Zhou

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), a class of pseudoscalars common to many extensions of the Standard Model, have the capacity to drain energy from the interiors of stars. Consequently, stellar evolution can be used to derive many constraints on…

High Energy Physics - Phenomenology · Physics 2021-09-16 Matthew J. Dolan , Frederick J. Hiskens , Raymond R. Volkas

A prominent aspect of the hunt for cold dark matter is looking for light scalar candidates such as axion-like particles (ALPs). The coupling between ALPs and photons allows for the spontaneous decay of ALPs into pairs of photons. It has…

High Energy Astrophysical Phenomena · Physics 2022-03-08 Ahmed Ayad , Geoff Beck
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