par Aaron, Francise;Favart, Laurent ;Hreus, Tomas ;Marage, Pierre ;Janssen, Xavier ;Mozer, Matthias ;Roland, Benoît ; [et al.]
Référence European Physical Journal C. Particles and Fields, 63, 4, page (625-678)
Publication Publié, 2009
Référence European Physical Journal C. Particles and Fields, 63, 4, page (625-678)
Publication Publié, 2009
Article révisé par les pairs
Résumé : | A measurement of the inclusive ep scattering cross section is presented in the region of low momentum transfers, 0.2∈GeV2 ≤Q 2≤12∈GeV2, and low Bjorken x, 5.10 -6x≤0.02. The result is based on two data sets collected in dedicated runs by the H1 Collaboration at HERA at beam energies of 27.6∈GeV and 920∈GeV for positrons and protons, respectively. A combination with data previously published by H1 leads to a cross section measurement of a few percent accuracy. A kinematic reconstruction method exploiting radiative ep events extends the measurement to lower Q 2 and larger x. The data are compared with theoretical models which apply to the transition region from photoproduction to deep inelastic scattering. © 2009 Springer-Verlag / Società Italiana di Fisica. |