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.
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- Gayler, J.
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- Glazov, A.
- Glushkov, I.
- Goerlich, L.
- Goettlich, M.
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- Jung, A.W.
- Jung, H.
- Kapichine, M.
- Katzy, J.
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- Kleinwort, C.
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- Vallee, C.
- Van Mechelen, P.
- Vargas, A.
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- Vinokurova, S.
- Volchinski, V.
- Weber, G.
- Weber, R.
- Zhang, Zhiqing
- Zomer, F.
DOIAbstract
21 pages, 6 figuresA measurement of elastic deeply virtual Compton scattering ∗p → p 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 ∗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 andW values and exponential t-slope parameters are derived. The measurements are compared to a NLO QCD calculation based on generalised parton distributions...
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