Multiparton interactions in ep scattering at HERA

H. Jung (DESY Hamburg; Univ. Antwerp) (for the H1; ZEUS collaboration)

Multiparton interactions in ep scattering at HERA

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arxiv 1012.1554 v1 pith:PIJYEX6D submitted 2010-12-07 hep-ph hep-ex

H. Jung (DESY Hamburg , Univ. Antwerp) (for the H1 , ZEUS collaboration) This is my paper · ORCID

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Measurements of jet production in the photoproduction region at HERA are presented, which are sensitive to the underlying event structure. It is argued that in the photoproduction region a significant amount of multi-parton interactions in the collinear factorisation ansatz are needed to describe the measurement. A different approach for higher order parton radiation (CCFM parton showers) can also describe the measurement.

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Direct versus resolved photons in DPS in photoproduction on proton and nuclei
hep-ph 2026-08 conditional novelty 6.0 of 10

In photoproduction double parton scattering, the 1⊗2 parton-splitting mechanism boosts resolved-photon cross sections by up to a factor 1.6, and direct photons dominate charm final states for x_γ above 0.3-0.4.

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