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Axion-like particles (ALPs) are hypothetical particles that serve as promising candidates for cold dark matter. Portals like inelastic axion scattering and axion propagated force have been employed to search for the upper limit of the ALPs'…

High Energy Physics - Phenomenology · Physics 2025-07-24 Dongyi Yang , Chenxi Sun , Jianwei Zhang

Experimental searches for Axion-Like Particles (ALPs) which couple to the electroweak bosons span over a wide range of ALP masses, from MeV searches at beam-dump experiments, to TeV searches at the LHC. Here we examine an interesting range…

High Energy Physics - Phenomenology · Physics 2021-08-27 Noah Steinberg

Axion Like Particles (ALPs), postulated to solve the strong-CP problem, are predicted to couple with photons in the presence of magnetic fields, which may lead to a significant change in the observed spectra of gamma-ray sources such as…

Cosmology and Nongalactic Astrophysics · Physics 2011-03-04 Miguel A. Sanchez-Conde

Axion-like particles (ALPs) appear in various new physics models with spontaneous global symmetry breaking. When the ALP mass is in the range of MeV to GeV, the cosmology and astrophysics bounds are so far quite weak. In this work, we…

High Energy Physics - Phenomenology · Physics 2021-12-08 Jie Ren , Daohan Wang , Lei Wu , Jin Min Yang , Mengchao Zhang

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

Axion-like particles (ALPs) are promising dark matter candidates. Their signals in direct detection experiments arise from the well-known inverse Primakoff effect or the inverse Compton scattering of the ALPs with the electron. In this…

High Energy Physics - Phenomenology · Physics 2023-11-17 Wei Chao , Jing-Jing Feng , Ming-Jie Jin

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

The opportunities which are offered by a next generation and multi-purpose fixed-target experiment exploiting the proton and lead LHC beams extracted by a bent crystal are outlined. In particular, such an experiment can greatly complement…

Ultralight axion-like particles (ALPs) are well-motivated dark matter candidates introduced by theories beyond the standard model. However, the constraints on the existence of ALPs through existing laboratory experiments are hindered by…

High Energy Physics - Phenomenology · Physics 2022-03-01 Min Jiang , Haowen Su , Antoine Garcon , Xinhua Peng , Dmitry Budker

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…

Axion-like particles (ALPs) are predicted in many extensions of the Standard Model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in…

High Energy Physics - Experiment · Physics 2021-11-04 The BABAR Collaboration

One kind of particularly interesting pseudoscalar particles, called axion-like particles (ALPs), have rich physical phenomenology at high- and low-energy collider experiments. After discussing most of single production channels of ALP at…

High Energy Physics - Phenomenology · Physics 2022-01-25 Chong-Xing Yue , Hua-Ying Zhang , Han Wang

Many existing and proposed experiments targeting QCD axion dark matter (DM) can also search for a broad class of axion-like particles (ALPs). We analyze the experimental sensitivities to electromagnetically-coupled ALP DM in different…

High Energy Physics - Phenomenology · Physics 2019-08-07 Nikita Blinov , Matthew J. Dolan , Patrick Draper , Jonathan Kozaczuk

In this work we revisit five different point sources within or behind galaxy clusters in order to constrain the coupling constant between axion-like particles (ALPs) and photons. We use three distinct machine learning (ML) techniques and…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-15 Simon Schallmoser , Sven Krippendorf , Francesca Chadha-Day , Jochen Weller

The exploration of long-lived particles in the MeV-GeV region is a formidable task but it may provide us a unique access to dark sectors. Fixed-target facilities with sufficiently energetic and intense proton beams are an ideal tool for…

High Energy Physics - Phenomenology · Physics 2020-10-28 Babette Döbrich , Joerg Jaeckel , Tommaso Spadaro

Axion-Like Particles (ALPs) are well-motivated extensions of the Standard Model of Particle Physics and a generic prediction of some string theories. X-ray observations of bright Active Galactic Nuclei (AGN) hosted by rich clusters of…

High Energy Astrophysical Phenomena · Physics 2023-07-05 Júlia Sisk-Reynés , Christopher S. Reynolds , Michael L. Parker , James H. Matthews , M. C. David Marsh

We propose to use atoms and molecules as quantum sensors of axion-mediated monopole-dipole forces. We show that electron spin precession experiments using atomic and molecular beams are well-suited for axion searches thanks to the presence…

High Energy Physics - Phenomenology · Physics 2024-11-05 Prateek Agrawal , Nicholas R. Hutzler , David E. Kaplan , Surjeet Rajendran , Mario Reig

We propose new signals for the direct detection of ultralight dark matter such as the axion. Axion or axion like particle (ALP) dark matter may be thought of as a background, classical field. We consider couplings for this field which give…

High Energy Physics - Phenomenology · Physics 2013-09-11 Peter W. Graham , Surjeet Rajendran

The exquisite capabilities of liquid Argon Time Projection Chambers make them ideal to search for weakly interacting particles in Beyond the Standard Model scenarios. Given their location at CERN the ProtoDUNE detectors may be exposed to a…

High Energy Physics - Phenomenology · Physics 2024-01-26 Pilar Coloma , Jacobo López-Pavón , Laura Molina-Bueno , Salvador Urrea

We show results from the Coherent CAPTAIN Mills (CCM) 2019 engineering run which begin to constrain regions of parameter space for axion-like particles (ALPs) produced in electromagnetic particle showers in an 800 MeV proton beam dump, and…