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Probing MeV to 90 GeV axion-like particles with LEP and LHC

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arxiv 1509.00476 v1 pith:W5IMCJEY submitted 2015-09-01 hep-ph hep-ex

Probing MeV to 90 GeV axion-like particles with LEP and LHC

classification hep-ph hep-ex
keywords gammaparticlesaxion-likelesssimrangesensitivityalpsapprox
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Axion-like particles (ALPs), relatively light (pseudo-)scalars coupled to two gauge bosons, are a common feature of many extensions of the Standard Model. Up to now there has been a gap in the sensitivity to such particles in the MeV to 10 GeV range. In this note we show that LEP data on $Z\to\gamma\gamma$ decays provides significant constraints in this range (and indeed up to the $Z$-mass). We also discuss the sensitivities of LHC and future colliders. Particularly the LHC shows promising sensitivity in searching for a pseudo-scalar with $4 \lesssim m_a \lesssim 60$ GeV in the channel $pp \to 3 \gamma$ with $m_{3\gamma}\approx m_{Z}$.

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Cited by 10 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. A covariant description of the interactions of axion-like particles and hadrons

    hep-ph 2025-06 unverdicted novelty 7.0

    A covariant framework identifies redefinition-invariant ALP couplings to gluons and quarks and computes physical decay rates for mixed scenarios.

  2. Searches for GeV-Scale ALPs at RHIC

    hep-ph 2026-06 unverdicted novelty 6.0

    Proposes searching for GeV-scale ALPs in ultra-peripheral collisions at RHIC via γγ → a → γγ, estimating sensitivity to m_a ~2-5 GeV and g_aγγ ≳4e-4 GeV^{-1} with existing PHENIX data.

  3. Bounds on massive graviton-like particles from searches for axion-like particles coupling to photons

    hep-ph 2026-05 unverdicted novelty 6.0

    Limits on axion-like particles from photon-coupling searches are recast as constraints on massive graviton-like particles across lab, astrophysical, and cosmological experiments using analogous Primakoff and Gertsensh...

  4. Search for Axion Like Particles produced via the Primakoff process at COMPASS

    hep-ph 2026-04 unverdicted novelty 6.0

    Reinterpretation of COMPASS data sets exclusion limits g_aγγ ≳ 10^{-1} GeV^{-1} at 95% CL for ALP masses 0.2-600 MeV by treating merged decay photons as contamination in the Compton sample.

  5. On Exclusive Coherent Production of Bosons in Electron-Proton Collisions

    hep-ph 2026-04 unverdicted novelty 6.0

    A phenomenological 2-to-3 framework is constructed for exclusive boson electroproduction that matches flux-factorized predictions near Q^{2}=0 while capturing finite-Q^{2} effects at larger virtualities.

  6. Braking protons at the EIC: from invisible meson decay to new physics searches

    hep-ph 2025-12 unverdicted novelty 6.0

    The EIC can probe invisible pseudoscalar meson decays down to branching ratios of 10^{-8} and invisibly decaying ALPs with couplings up to 10^5 GeV for masses 0.1-2 GeV.

  7. Constraints on axion-like particles from ultra-high-energy observations of M87 with the HAWC observatory

    astro-ph.HE 2026-06 unverdicted novelty 4.0

    No photon-ALP conversion signal found in HAWC data from M87, producing competitive constraints excluding ALP masses of 10^{-8} to 10^{-6} eV for couplings above 5×10^{-12} GeV^{-1}.

  8. Cornering MeV-GeV Axions and Dark Photons with LDMX

    hep-ph 2026-04 unverdicted novelty 4.0

    LDMX can close much of the sub-100 MeV blind spot for axions and dark photons via charged track and momentum reconstruction.

  9. Axions as Dark Matter, Dark Energy, and Dark Radiation

    hep-ph 2025-09 unverdicted novelty 2.0

    A mini-review of axion phenomenology showing how light bosons can account for dark matter, drive cosmic acceleration, or contribute to relativistic backgrounds in the early and late Universe.

  10. The landscape of QCD axion models

    hep-ph 2020-03 unverdicted novelty 2.0

    Review classifies QCD axion models extending the standard mass-coupling window and updates bounds from cosmology, astrophysics, and experiments.