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The idea that photons can convert into axion-like particles (ALPs) $\gamma \to a$ in or around an AGN and reconvert back into photons $a \to \gamma$ in the Milky Way magnetic field has been put forward in 2008 and has recently attracted…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Fabrizio Tavecchio , Marco Roncadelli , Giorgio Galanti

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

Several extensions of the Standard Model predict the existence of Axion-Like Particles (ALPs), very light spin-zero bosons with a two-photon coupling. ALPs can give rise to observable effects in very-high-energy astrophysics. Above roughly…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Marco Roncadelli , Alessandro De Angelis , Giorgio Galanti

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

Gamma-ray photons can convert into axion-like particles (ALPs) and vice versa when interacting with astrophysical magnetic fields. The conversions of ALPs may have important implications for astrophysics since they would imprint…

High Energy Astrophysical Phenomena · Physics 2013-05-02 Miguel A. Sanchez-Conde , Stefan Funk , Frank Krennrich , Amanda Weinstein

We explore the sensitivity of photon-beam experiments to axion-like particles (ALPs) with QCD-scale masses whose dominant coupling to the Standard Model is either to photons or gluons. We introduce a novel data-driven method that eliminates…

High Energy Physics - Phenomenology · Physics 2020-04-15 Daniel Aloni , Cristiano Fanelli , Yotam Soreq , Mike Williams

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

The search for axions and axion-like particles (ALPs) remains a major endeavor in modern physics investigation. Axions play essential roles in the quest to understand dark matter, the strong CP problem, and various astrophysical phenomena.…

High Energy Physics - Phenomenology · Physics 2024-12-13 Maurizio Giannotti

Neutrino experiments lie at the edge of the intensity frontier and therefore can be exploited to search for new light particles weakly coupled to the visible sector. In this work we derive new constraints on axion-like particles (ALPs)…

High Energy Physics - Phenomenology · Physics 2023-10-17 Pilar Coloma , Pilar Hernández , Salvador Urrea

Although axion-like particles (ALPs) are popular dark matter candidates, their mass generation mechanisms as well as cosmic thermal evolutions are still unclear. In this letter, we propose a new mass generation mechanism of ALP during the…

High Energy Physics - Phenomenology · Physics 2022-10-25 Wei Chao , Mingjie Jin , Hai-Jun Li , Ying-Quan Peng

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

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

Compared with conventional accelerators, laser plasma accelerators can generate high energy ions at a greatly reduced scale, due to their TV/m acceleration gradient. A compact laser plasma accelerator (CLAPA) has been built at the Institute…

Accelerator Physics · Physics 2017-10-17 J. G. Zhu , K. Zhu , L. Tao , X. H. Xu , C. Lin , W. J. Ma , H. Y. Lu , Y. Y. Zhao , Y. R. Lu , J. E. Chen , X. Q. Yan

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 propose an experiment for detecting Axion-Like Particles (ALPs) based on the axion-photon interaction in the presence of a non-uniform magnetic field. The impact of virtual ALPs on the polarization of the photons inside a cavity is…

High Energy Physics - Phenomenology · Physics 2022-06-22 Moslem Zarei , Soroush Shakeri , Mohammad Sharifian , Mehdi Abdi , David J. E. Marsh , Sabino Matarrese

Theoretical axion models state that axions are very weakly interacting particles. In order to experimentally detect them, the use of colorful and inspired techniques becomes mandatory. There is a wide variety of experimental approaches that…

High Energy Physics - Experiment · Physics 2011-04-11 R. Battesti , B. Beltran , H. Davoudiasl , M. Kuster , P. Pugnat , R. Rabadan , A. Ringwald , N. Spooner , K. Zioutas

Relativistic axion-like particles (ALPs) originating from the stellar interiors, along with the ones coming from photon-ALP mixing in the galactic magnetic fields, contribute together to make an energetic component of the ALP content of the…

High Energy Astrophysical Phenomena · Physics 2011-08-09 Athanasios Manousos , Anastasios Liolios , Christos Eleftheriadis

Axion-like particles (ALPs) are a well-motivated dark matter candidate that solve some of the problems in the clustering of large scale structure in cosmology. ALPs are often described by a simplified quadratic potential to specify the…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-13 Harrison Winch , Renee Hlozek , David J. E. Marsh , Daniel Grin , Keir Rogers

We outline the many physics opportunities offered by a multi-purpose fixed-target experiment using the LHC proton and Pb beams extracted by a bent crystal. In a proton run with the LHC 7-TeV beam, one can analyze pp, pd and pA collisions at…

High Energy Physics - Phenomenology · Physics 2015-06-04 S. J. Brodsky , F. Fleuret , C. Hadjidakis , J. P. Lansberg

We present an analysis of the sensitivity of current and future LHC searches for new spin-0 particles in top-anti-top-quark ($t\bar{t}$) final states, focusing on generic axion-like particles (ALPs) that are coupled to top quarks and…

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