Measurement of deeply virtual Compton scattering and its t-dependence at HERA
- Aaron, F.D.
- Aktas, A.
- Alexa, C.
- Andreev, V.
- Antunovic, B.
- Aplin, S.
- Asmone, A.
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- Finke, L.
- Fleischer, M.
- Fomenko, A.
- Franke, G.
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- Ghazaryan, S.
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- Glushkov, I.
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- Goettlich, M.
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- Johnson, D.P.
- Jung, A.W.
- Jung, H.
- Kapichine, M.
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- Kleinwort, C.
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- Krastev, K.
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- Lange, W.
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- Laycock, P.
- Lebedev, A.
- Leibenguth, G.
- Lendermann, V.
- Levonian, S.
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- Werner, C.
- Wessels, M.
- Wissing, Ch.
- Wolf, R.
- Wünsch, E.
- Yeganov, V.
- Žáček, J.
- Zálešák, J.
- Zhang, Z.
- Zhelezov, A.
- Zhokin, A.
- Zhu, Y.C.
- Zimmermann, T.
- Zohrabyan, H.
- Zomer, F.
DOIAbstract
AbstractA measurement of elastic deeply virtual Compton scattering γ∗p→γp using e−p collision data recorded with the H1 detector at HERA is presented. The analysed data sample corresponds to an integrated luminosity of 145 pb−1. The cross section is measured as a function of the virtuality Q2 of the exchanged photon and the centre-of-mass energy W of the γ∗p system in the kinematic domain 6.5<Q2<80 GeV2, 30<W<140 GeV and |t|<1 GeV2, where t denotes the squared momentum transfer at the proton vertex. The cross section is determined differentially in t for different Q2 and W values and exponential t-slope parameters are derived. The measurements are compared to a NLO QCD calculation based on generalised parton distributions. In the context of...
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