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Exclusive heavy vector meson electroproduction to NLO in collinear factorisation

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arxiv 2105.07657 v2 pith:OHVG7X2T submitted 2021-05-17 hep-ph

classification hep-ph
keywords electroproductionexclusiveheavycollinearfactorisationprocessquarkoniabeen
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We compute the exclusive electroproduction, $\gamma^* p \rightarrow V p$, of heavy quarkonia $V$ to NLO in the collinear factorisation scheme, which has been formally proven for this process. The inclusion of an off-shell virtuality $Q^2$ carried by the photon extends the photoproduction phase space of the exclusive heavy quarkonia observable to electroproduction kinematics. This process is relevant for diffractive scattering at HERA and the upcoming EIC, as well as at the proposed LHeC and FCC.

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Cited by 3 Pith papers

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    A new global extraction, GUMP1.0, fits generalized parton distributions to 2,646 experimental and lattice data points at NLO accuracy and uses them to image the proton and decompose its spin.

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    The leading relativistic correction to near-threshold photoproduction of J/psi and Upsilon is derived; for J/psi it is so large that the standard moment-expansion analysis of the proton's gluon gravitational form fact...

  3. Bayesian Inferring Nucleon's Gravitation Form Factors via Near-threshold $J/\psi$ Photoproduction

    hep-ph 2025-01 conditional novelty 5.0 of 10

    A Bayesian NLO analysis of near-threshold J/psi photoproduction data, combined with lattice QCD, finds compatible proton gravitational form factors and prefers negative C_q and C_g.

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