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A Closer Look at Dark Vector Splitting Functions in Proton Bremsstrahlung

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arxiv 2409.09123 v1 pith:Y7WJROIP submitted 2024-09-13 hep-ph

Saeid Foroughi-Abari , Peter Reimitz , Adam Ritz This is my paper · ORCID
classification hep-ph
keywords darkproductionbremsstrahlungcalculationdegreesfreedomfunctionsproton
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

High luminosity colliders and fixed target facilities using proton beams are sensitive to new weakly coupled degrees of freedom across a broad mass range. Among the various production modes, bremsstrahlung is particularly important for dark sector degrees of freedom with masses between 0.5 and 2.0 GeV, due to mixing with hadronic resonances. In this paper, we revisit the calculation of dark vector production via initial state radiation in non-single diffractive scattering, using an improved treatment of the splitting functions and timelike electromagnetic form-factors. The approach is benchmarked by applying an analogous calculation to model inclusive $\rho$-meson production, indicating consistency with data from NA27 in the relevant kinematic range.

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Cited by 3 Pith papers

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

  1. Muon Bremsstrahlung as a New Probe of Dark Sector at Neutrino Experiments

    hep-ph 2026-07 conditional novelty 7.0 of 10

    Muon bremsstrahlung from the focused muon beam at neutrino facilities can produce heavy neutral leptons up to ~1 GeV, opening new search territory for SBND and DUNE Near Detector.

  2. Sub-GeV dark matter and multi-decay signatures from dark showers at beam-dump experiments

    hep-ph 2025-10 conditional novelty 6.0 of 10

    SHiP could observe multiple displaced vertices per event from dark rho mesons in dark showers, probing dark rho masses up to ~2 GeV and discriminating the model from dark photons.

  3. The bremsstrahlung-like production of the massive spin-2 dark matter mediator

    hep-ph 2024-12 conditional novelty 6.0 of 10

    E137 beam-dump data exclude spin-2 dark matter mediator couplings from about 8e-8 to 1e-5 per GeV for mediator masses 100 to 800 MeV, assuming equal electron and photon couplings.

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