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Probing axion-like particles with γ γ final states from vector boson fusion processes at the LHC

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arxiv 2101.11119 v1 pith:OSG2QAO2 submitted 2021-01-26 hep-ph

Probing axion-like particles with γ γ final states from vector boson fusion processes at the LHC

classification hep-ph
keywords gammalambdalesssimalpsassumingaxion-likebosondecay
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We perform a feasibility study to search for axion-like particles (ALPs) using vector boson fusion (VBF) processes at the LHC. We work in an effective field theory framework with cutoff scale $\Lambda$ and ALP mass $m_{a}$, and assume that ALPs couple to photons with strength $\propto 1/\Lambda$. Assuming proton-proton collisions at $\sqrt{s} = 13$ TeV, we present the total VBF ALP production cross sections, ALP decay widths and lifetimes, and relevant kinematic distributions as a function of $m_{a}$ and $\Lambda$. We consider the $a\to\gamma\gamma$ decay mode to show that the requirement of an energetic diphoton pair combined with two forward jets with large dijet mass and pseudorapidity separation can significantly reduce the Standard Model backgrounds, leading to a $5\sigma$ discovery reach for $10 \text{ MeV} \lesssim m_{a} \lesssim 1$ TeV with $\Lambda \lesssim 2$ TeV, assuming an integrated luminosity of 3000 fb$^{-1}$. In particular, this extends the LHC sensitivity to a previously unstudied region of the ALP parameter space.

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Forward citations

Cited by 6 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.

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  3. Collider Probes of Dark Energy Microphysics

    hep-ph 2026-06 unverdicted novelty 6.0

    Collider observables of a pseudoscalar mediator resonance can become sensitive to the sound speed of dark energy fluctuations via modified propagation in a dark energy background.

  4. 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.

  5. 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.

  6. A search for heavy axion-like particles in light-by-light scattering at the FCC-hh

    hep-ph 2026-03 unverdicted novelty 3.0

    Computes production cross sections and sensitivity limits for heavy ALPs in light-by-light scattering at FCC-hh across pp, pPb, and PbPb modes.