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Axion-like particles (ALPs) arise naturally in many extensions of the Standard Model (SM). We explore the discovery potential for ALPs of the Large Hadron electron Collider (LHeC) via the $W^{+}W^{-}$ fusion process. For concreteness, both…

High Energy Physics - Phenomenology · Physics 2023-06-28 Chong-Xing Yue , Han Wang , Xue-Jia Cheng , Yue-Qi Wang

We investigate the sensitivity of current and future hadron-collider experiments to axion-like particles (ALPs) through associated diboson production, focusing on a linear effective field theory framework with bosonic ALP couplings. We…

High Energy Physics - Phenomenology · Physics 2026-03-30 Barbara Jäger , Ozan Semin

The exclusive production of axionlike particles (ALPs) by gluon -- induced interactions is investigated in this exploratory study considering $pp$ and $PbPb$ collisions for the energies of the next run of the Large Hadron Collider (LHC).…

High Energy Physics - Phenomenology · Physics 2020-12-30 V. P. Goncalves , W. K. Sauter

We present a new calculation of axion-like particle (ALP) production in the semi-exclusive photon-initiated (PI) channel, that is either with intact outgoing protons or rapidity gaps present in the final state, and with no colour flow…

High Energy Physics - Phenomenology · Physics 2023-02-23 L. A. Harland-Lang , M. Tasevsky

We study axion-like particles (ALPs) whose dominant interactions are with gluons and third-generation quarks, and whose couplings to light Standard Model (SM) particles arise at one loop. These loop-induced effects lead to ALP decays and…

High Energy Physics - Phenomenology · Physics 2025-09-01 Jon Butterworth , Matthew Cullingworth , Joseph Egan , Fabian Esser , Veronica Sanz , Maria Ubiali

The production of axionlike particles (ALP) in ultraperipheral $PbPb$ collisions (UPHIC) is investigated considering the energies of the next run of the Large Hadron Collider (LHC) and of the future High Energy -- LHC (HE -- LHC) and Future…

High Energy Physics - Phenomenology · Physics 2020-06-24 R. O. Coelho , V. P. Goncalves , D. E. Martins , M. S. Rangel

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

A virtual production of heavy axion-like particles (ALPs) via light-by-light scattering in pp, pPb and Pb collisions at the future 100 TeV collider FCC-hh is studied. Both differential and total cross sections are calculated. The 95\% C.L.…

High Energy Physics - Phenomenology · Physics 2026-05-18 S. C. Inan , A. V. Kisselev

Axion-like particles (ALPs) are a broad class of pseudo-scalar bosons that generically arise from broken symmetries in extensions of the standard model. In many scenarios, ALPs can mix with photons in regions with high magnetic fields.…

High Energy Physics - Phenomenology · Physics 2022-03-10 Sunniva Jacobsen , Tim Linden , Katherine Freese

In this work, we calculate the sensitivities on the gauge-boson couplings $g_{aZZ}$, $g_{aZ\gamma}$, and $g_{aWW}$ of an axion-like particle (ALP) that one can achieve at the LHC with $\sqrt{s}=14$ TeV and integrated luminosities of 300…

High Energy Physics - Phenomenology · Physics 2024-05-08 Kingman Cheung , Wanyon Hsiao , C. J. Ouseph , Chen Wang

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 axion-like particle (ALP) is a well motivated new particle candidate of beyond the Standard Model. In this work, we propose to probe the ALP through the photon fusion scattering at the upcoming Electron-Ion Collider (EIC) with electron…

High Energy Physics - Phenomenology · Physics 2023-03-29 Yandong Liu , Bin Yan

Axion-like particles (ALPs) are hypothetical particles and compelling candidates for cold dark matter. Their existence could be probed through their conversions into photons in the presence of magnetic fields. In this work, we explore the…

The current Large Hadron Collider (LHC) data show no clear indication of new physics and only incremental improvements are anticipated at the energy frontier in the near future. However, while the focus of the LHC has been on constraining…

High Energy Physics - Phenomenology · Physics 2025-10-10 Amit Adhikary , Aoife Bharucha , Lorenzo Feligioni , Michele Frigerio

Axion-like particles (ALPs) and Higgs bosons can interact in scalar sectors beyond the Standard Model, leading the Higgs boson to decay into pairs of gluons and photons through the ALP interaction and giving rise to resonances in the decay…

High Energy Physics - Phenomenology · Physics 2021-05-05 Alexandre Alves , A. G. Dias , D. D. Lopes

We present an in-depth analysis of axions and axion-like particles in top-pair production at the LHC. Our main goal is to probe the axion coupling to top quarks at high energies. To this end, we calculate the top-antitop cross section and…

High Energy Physics - Phenomenology · Physics 2024-06-10 Anh Vu Phan , Susanne Westhoff

Assuming ALPs couple to gluons only, they can be produced via the $p p \to a j$ process and decay into two jets at the LHC. When the coupling parameter, $C_{\tilde{G}} / f_a$, is small, the lifetime of ALPs can be long enough leading to…

High Energy Physics - Phenomenology · Physics 2022-08-01 Filmon Andom Ghebretinsaea , Zeren Simon Wang , Kechen Wang

This article describes a search for low-mass axion-like particles (ALPs) at the Large Hadron Collider (LHC). If ALPs were produced at the LHC via gluon-gluon fusion and decayed to bosons, the energy dependence of the measured diboson…

High Energy Physics - Experiment · Physics 2021-11-29 Sonia Carra , Vincent Goumarre , Ruchi Gupta , Sarah Heim , Beate Heinemann , Jan Kuechler , Federico Meloni , Pablo Quilez , Yee-Chinn Yap

Axion-like particles (ALPs) can provide a portal to new states of a dark sector. We study the phenomenology of this portal when the ALP mainly decays invisibly, while its interaction with the standard model sector proceeds essentially via…

High Energy Physics - Phenomenology · Physics 2021-06-16 Luc Darmé , Federica Giacchino , Enrico Nardi , Mauro Raggi

We study the possibility of finding the axion-like particles (ALPs) through the leptonic decays of heavy mesons. The Standard Model (SM) predictions of the branching ratios of the leptonic decays of heavy mesons are less than the…

High Energy Physics - Phenomenology · Physics 2024-12-03 Gang Yang , Tianhong Wang , Guo-Li Wang