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Axionlike particles (ALPs) can be produced in meson decays via tree-level quark-flavor-violating couplings, and decay to a pair of sterile neutrinos if also coupled to them. Such light sterile neutrinos are necessarily long-lived and may…

High Energy Physics - Phenomenology · Physics 2025-01-29 Zeren Simon Wang , Yu Zhang , Wei Liu

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

The absence of definitive results for WIMP dark matter has sparked growing interest in alternative dark matter candidates, such as axions and Axion-Like Particles (ALPs), which also provide insight into the strong CP problem. The Mitchell…

Nuclear power plants are not only vital sources of clean energy but also powerful facilities for probing new physics beyond the Standard Model. Due to the intense gamma-ray flux and an appropriate energy conditions, they are particularly…

High Energy Physics - Phenomenology · Physics 2025-09-03 Wei Dai , Yuanlin Gong , Guanhua Gu , Liangliang Su , Li Wang , Lei Wu , Yongcheng Wu , Litao Yang

Axion-like particles (ALPs) are pseudo Nambu-Goldstone bosons of spontaneously broken global symmetries in high-energy extensions of the Standard Model (SM). This makes them a prime target for future experiments aiming to discover new…

High Energy Physics - Phenomenology · Physics 2020-08-19 Martin Bauer , Mathias Heiles , Matthias Neubert , Andrea Thamm

We propose a new method to search for axion-like particles (ALPs) based on the gamma-rays produced concomitant with high-energy astrophysical neutrinos. The existence of high-energy neutrinos implies production of gamma-rays in the same…

High Energy Physics - Phenomenology · Physics 2017-12-07 Hendrik Vogel , Ranjan Laha , Manuel Meyer

Axion-like particles (ALPs) interacting with the Standard Model can be abundantly produced in proton beam fixed-target experiments. Looking for their displaced decays is therefore an effective search strategy for ALPs with a mass in the MeV…

High Energy Physics - Phenomenology · Physics 2022-02-08 Nikita Blinov , Elizabeth Kowalczyk , Margaret Wynne

The goal of FASER, ForwArd Search ExpeRiment at the LHC, is to discover light, weakly-interacting particles with a small and inexpensive detector placed in the far-forward region of ATLAS or CMS. A promising location in an unused service…

High Energy Physics - Phenomenology · Physics 2021-11-18 Jonathan L. Feng , Iftah Galon , Felix Kling , Sebastian Trojanowski

We study the search prospect of long-lived heavy neutral leptons (HNLs) pair produced in decays of axionlike particles (ALPs) at the proposed Super Tau-Charm Facility (STCF), focusing on the center-of-mass energy of $\sqrt{s}=3.773$ GeV.…

High Energy Physics - Phenomenology · Physics 2026-05-13 Xiaokun Li , Zeren Simon Wang , Yu Zhang , Xiaorong Zhou

The hot interiors of massive stars in the later stages of their evolution provide an ideal place for the production of heavy axion-like particles (ALPs) with mass up to O(100 keV) range. We show that a fraction of these ALPs could stream…

High Energy Physics - Phenomenology · Physics 2024-12-31 James H. Buckley , P. S. Bhupal Dev , Francesc Ferrer , Takuya Okawa

We provide an introduction to searches for axions and Axion-Like Particles (ALPs) at colliders. After covering the basics of collider physics, with a focus on production and detection of new particles, we give a rather broad introduction…

High Energy Physics - Phenomenology · Physics 2025-05-02 Michele Tammaro , Jure Zupan

We consider a muonphilic axion-like-particle (ALP), denoted as $a$, lighter than twice the muon mass. ALPs of this mass range dominantly decay into a pair of photons, induced by a triangular muon loop. Such light muonphilic ALPs are…

High Energy Physics - Phenomenology · Physics 2022-12-07 Kingman Cheung , Jui-Lin Kuo , Po-Yan Tseng , Zeren Simon Wang

We give an overview of collider searches for Axion-like particles (ALPs). The intention of this review is to give a pedagogical introduction to collider phenomenology of ALPs, and provide a starting point for newcomers, including suitable…

High Energy Physics - Phenomenology · Physics 2025-08-28 Anke Biekötter , Ken Mimasu

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 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

We study the discovery potential of axion-like particles (ALP), pseudo-scalars weakly coupled to Standard Model fields, at the Large Hadron Collider (LHC). Our focus is on ALPs coupled to the electromagnetic field, which would induce…

High Energy Physics - Phenomenology · Physics 2019-06-20 C. Baldenegro , S. Hassani , C. Royon , L. Schoeffel

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…

Radiative quarkonia decays offer an ideal setting for probing Axion-Like Particle (ALP) interactions. This paper provides a comprehensive review of ALP production mechanisms through the $e^+ e^- \to \gamma\,a$ process at B- and…

High Energy Physics - Phenomenology · Physics 2024-02-21 Luca Di Luzio , Alfredo Walter Mario Guerrera , Xavier Ponce Díaz , Stefano Rigolin

We consider an axion-like particle (ALP) coupled to Standard Model (SM) fermions as a mediator between the SM and a fermionic dark matter (DM) particle. We explore the case where the ALP-SM and/or the ALP-DM couplings are too small to allow…

High Energy Physics - Phenomenology · Physics 2024-01-08 A. Bharucha , F. Brümmer , N. Desai , S. Mutzel

Hypothetical axion-like particles (ALPs) are of interest because of their potential to act as dark matter or to reveal information about yet undiscovered fundamental constituents of matter. Such particles can be created when photons…

High Energy Astrophysical Phenomena · Physics 2025-08-19 Denys Malyshev , Lidiia Zadorozhna , Yuriy Bidasyuk , Andrea Santangelo , Oleg Ruchayskiy