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arXiv · hep-ex/0505061

Measurement of Deeply Virtual Compton Scattering at HERA

H1 Collaboration
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Abstract

A measurement is presented of elastic deeply virtual Compton scattering γ* p \to γp made using e^+ p collision data corresponding to a luminosity of 46.5 pb^{-1}, taken with the H1 detector at HERA. The cross section is measured as a function of the photon virtuality, Q^2, the invariant mass of the γ* p system, W, and for the first time, differentially in the squared momentum transfer at the proton vertex, t, in the kinematic range 2 < Q^2 < 80 GeV^2, 30 < W < 140 GeV and |t| < 1 GeV^2. QCD based calculations at next-to-leading order using generalized parton distributions can describe the data, as can colour dipole model predictions.

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H1 Collaboration. 2005-05-18. Measurement of Deeply Virtual Compton Scattering at HERA. https://doi.org/10.1140/epjc%2Fs2005-02345-3

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