par Adloff, Catherine;Clerbaux, Barbara 
;Favart, Laurent ;Janssen, Xavier ;Marage, Pierre ; [et al.]
Référence European Physical Journal C. Particles and Fields, 44, 1, page (1-11)
Publication Publié, 2005
;Favart, Laurent ;Janssen, Xavier ;Marage, Pierre ; [et al.]Référence European Physical Journal C. Particles and Fields, 44, 1, page (1-11)
Publication Publié, 2005
Article révisé par les pairs
| Résumé : | A measurement is presented of elastic deeply virtual Compton scattering γ*p → γp made using e +p collision data corresponding to a luminosity of 46.5pb -1, taken with the HI 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. © Springer-Verlag/ Società Italiana di Fisica 2005. |
