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Axionlike particles (ALPs) and dark photons (DPs) are viable dark matter particle candidates. We have searched for possible ALP/DP signals in the PandaX-4T liquid xenon detector using 440 kg$\cdot$yr of data. A binned likelihood fit is…

We study ALP-photon-conversion within strong inhomogeneous electromagnetic fields as provided by contemporary high-intensity laser systems. We observe that probe photons traversing the focal spot of a superposition of Gaussian beams of a…

High Energy Physics - Phenomenology · Physics 2014-11-21 Babette Döbrich , Holger Gies

Axion-Like Particles (ALPs) are predicted by many extensions of the Standard Model and give rise to characteristic dimming and polarization effects in a light beam travelling in a magnetic field. In this Letter, we demonstrate that…

Astrophysics · Physics 2008-11-26 Alessandro De Angelis , Oriana Mansutti , Marco Roncadelli

Axion-like particles (ALPs) produced via the Primakoff process in the cores of Galactic core-collapse supernovae (SNe) could convert into MeV-energy gamma-rays through interactions with the Milky Way's magnetic field. To evaluate the…

High Energy Astrophysical Phenomena · Physics 2026-04-08 Zhen Xie , Jiahao Liu , Bing Liu , Ruizhi Yang

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 hypothetical pseudo-scalar particles actively searched as light dark matter candidates. The coupling of ALPs to photons can give rise to distinctive spectral features in the observed gamma-ray spectrum of…

High Energy Astrophysical Phenomena · Physics 2026-03-13 Cervane Grimaud , Denys Malyshev , Emmanuel Moulin

Light pseudoscalars known as axion like particles (ALPs) may be behind physical phenomena like the Universe transparency to ultra-energetic photons, the soft $\gamma$-ray excess from the Coma cluster, and the 3.5 keV line. We explore the…

High Energy Physics - Phenomenology · Physics 2015-08-31 C. D. R. Carvajal , A. G. Dias , C. C. Nishi , B. L. Sánchez-Vega

e-ASTROGAM is a space mission with unprecedented sensitivity to photons in the MeV range, proposed within the ESA M5 call. In this note we describe some measurements sensitive to axion-like particles, for which performance in the MeV/GeV…

High Energy Astrophysical Phenomena · Physics 2017-04-04 Marco Roncadelli , Giorgio Galanti , Alessandro De Angelis

Recently, the PVLAS collaboration has reported evidence for an anomalous rotation of the polarization of light in vacuum in the presence of a transverse magnetic field. This may be explained through the production of a new light spin-zero…

High Energy Physics - Experiment · Physics 2007-05-23 Klaus Ehret , Maik Frede , Ernst-Axel Knabbe , Dietmar Kracht , Axel Lindner , Niels Meyer , Dieter Notz , Andreas Ringwald , Guenter Wiedemann

Galactic dark matter may consist of axionlike particles (ALPs) that can be described as an "ultralight bosonic field" oscillating at the ALP Compton frequency. The ALP field can be searched for using nuclear magnetic resonance (NMR), where…

Most embeddings of the Standard Model into a more unified theory, in particular the ones based on supergravity or superstrings, predict the existence of a hidden sector of particles which have only very weak interactions with the visible…

High Energy Physics - Phenomenology · Physics 2015-05-18 Joerg Jaeckel , Andreas Ringwald

The Any Light Particle Search II (ALPS II) experiment (DESY, Hamburg) searches for photon oscillations into Weakly Interacting Sub-eV Particles (WISPs). This second generation of the ALPS light-shining-through-a-wall (LSW) experiment…

Instrumentation and Detectors · Physics 2019-08-13 Noemie Bastidon

Axion-like particles (ALPs) provide a promising direction in the search for new physics, while a wide range of models incorporate ALPs. We point out that future neutrino experiments, such as DUNE, possess competitive sensitivity to ALP…

High Energy Physics - Phenomenology · Physics 2021-05-19 Vedran Brdar , Bhaskar Dutta , Wooyoung Jang , Doojin Kim , Ian M. Shoemaker , Zahra Tabrizi , Adrian Thompson , Jaehoon Yu

We propose a three-beam stimulated resonant photon collider with focused laser fields in order to directly produce an axion-like particle (ALP) with the two beams and to stimulate its decay by the remaining one. The expected sensitivity…

High Energy Physics - Phenomenology · Physics 2023-01-05 Kensuke Homma , Fumiya Ishibashi , Yuri Kirita , Takumi Hasada

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

The search for non-baryonic dark matter remains a key focus in modern physics, with the light pseudoscalar axion serving as a well-motivated candidate. Here, we present a laboratory-scale detection scheme to constrain axion-nucleon…

High Energy Physics - Phenomenology · Physics 2026-05-27 Jiawei Li , Ka-di Zhu

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…

With their high beam energy and intensity, existing and near-future proton beam dumps provide an excellent opportunity to search for new very weakly coupled particles in the MeV to GeV mass range. One particularly interesting example is a…

High Energy Physics - Phenomenology · Physics 2016-02-10 Babette Döbrich , Joerg Jaeckel , Felix Kahlhoefer , Andreas Ringwald , Kai Schmidt-Hoberg

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

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