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We consider possible experimental tests of recent hypotheses suggesting that TeV photons survive the pair production interaction with extragalactic background light over cosmological distances by converting to axion-like particles (ALPs) in…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 F. T. Avignone , R. J. Creswick , S. Nussinov

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), 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

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

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 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

The Milky-Way magnetic field can trigger conversions between photons and axion-like particles (ALPs), leading to peculiar features on the observable photon spectra. Previous studies considered only the regular component of the magnetic…

High Energy Physics - Phenomenology · Physics 2021-07-08 Pierluca Carenza , Carmelo Evoli , Maurizio Giannotti , Alessandro Mirizzi , Daniele Montanino

We establish strong gravitational lens systems as robust probes of axion-like particles (ALPs) -- a candidate for dark matter. A tiny interaction of photons with ALPs induces birefringence. Multiple images of gravitationally lensed…

Cosmology and Nongalactic Astrophysics · Physics 2021-05-19 Aritra Basu , Jishnu Goswami , Dominik J. Schwarz , Yuko Urakawa

Several laboratory experiments have published limits on axionlike particles (ALPs) with feeble couplings to electrons and masses in the keV-MeV range, under the assumption that such ALPs comprise the dark matter. We note that ALPs decay…

High Energy Physics - Phenomenology · Physics 2022-06-15 Ricardo Z. Ferreira , M. C. David Marsh , Eike Müller

We consider a cosmological scenario in which the very early Universe experienced a transient epoch of matter domination due to the formation of a large population of primordial black holes (PBHs) with masses $M \lesssim 10^{9}\,\textrm{g}$,…

High Energy Physics - Phenomenology · Physics 2021-09-03 Francesco Schiavone , Daniele Montanino , Alessandro Mirizzi , Francesco Capozzi

In this work we propose reactoscope, a novel experimental setup for axion-like particle (ALP) searches. Nuclear reactors produce a copious number of photons, a fraction of which could convert into ALPs via Primakoff process in the reactor…

High Energy Physics - Phenomenology · Physics 2024-05-24 Fernando Arias-Aragón , Vedran Brdar , Jérémie Quevillon

We propose an interferometry experiment for the detection of axion-like particles (ALPs). As in ordinary photon-regeneration (light shining through a wall) experiments, a laser beam traverses a region permeated by a magnetic field, where…

High Energy Physics - Phenomenology · Physics 2018-08-28 H. Tam , Q. Yang

Studies of axion-like particles (ALPs) commonly focus on a single type of interaction, for example couplings only to photons. Most ALP models however predict correlations between different couplings, which change the phenomenology in…

High Energy Physics - Phenomenology · Physics 2020-07-15 Fatih Ertas , Felix Kahlhoefer

Axion Like Particles (ALPs) belong to a well motivated class of particles which are part of a more complete UV theory. In this work, we initiate and present the inclusion of such ALPs or the conventional axions in the Heavy Hadron Chiral…

High Energy Physics - Phenomenology · Physics 2023-08-02 Namit Mahajan

Axionlike particles (ALPs) are a common prediction of theories beyond the Standard Model of particle physics that could explain the entirety of the cold dark matter. These particles could be detected through their mixing with photons in…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Manuel Meyer

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

Axions and axion-like particles (ALPs) appear in many extensions of the Standard Model and are being investigated as promising dark matter (DM) candidates. One viable methodology for their detection involves the investigation of the…

High Energy Astrophysical Phenomena · Physics 2024-04-18 Wen-Qing Guo , Zi-Qing Xia , Xiaoyuan Huang

We report on a broadband search for axion-like-particle (ALP) interactions using a radio-frequency-operated $^{87}\mathrm{Rb}$ atomic magnetometer. The instrument provides wide spectral coverage and sensitivity to an oscillating…

Atomic Physics · Physics 2026-03-31 A. Rigoulet , S. Nanos , I. K. Kominis , D. Antypas

Axion-like particles (ALPs) are compelling candidates for dark matter and potential portals to new physics beyond the Standard Model. Photons traversing magnetized regions can convert into ALPs, producing characteristic, energy-dependent…

High Energy Astrophysical Phenomena · Physics 2026-01-23 Denys Malyshev , Lidiia Zadorozhna , Yuriy Bidasyuk , Andrea Santangelo , Oleg Ruchayskiy

Axion-Like Particles (ALPs) coupled with electrons would be produced in a Supernova (SN) via electron-proton bremsstrahlung and electron-positron fusion. We evaluate the ALP emissivity from these processes by taking into account the ALP…

High Energy Physics - Phenomenology · Physics 2021-11-16 Giuseppe Lucente , Pierluca Carenza
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