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Measurement of DVCS at HERA |
| Reference |
Final plots for the final paper, Spring 2005 |
| Figures |
(1a)
(1b)
(1c)
(2a)
(2b)
(3)
(4)
(5)
(6)
(7a)
(7b)
(8a)
(8b)
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| Contact |
L. Schoeffel, L. Favart |
| Abstract |
A measurement is presented of elastic deeply virtual Compton
scattering gamma^* p
ightarrow \photon p 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, Q2, the invariant mass of the
gamma-p system, W, and for the first time, differentially in the
squared momentum transfer at the proton vertex, t, in the kinematic
range
2 < Q2 < 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. |
| Links |
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