2002/01/05 by Bernd Surrow, Surrow, Bernd
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0201025
Invited talk given at the International Europhysics Conference on High Energy Physics, July 12-18, 2001, Budapest, Hungary on behalf of the H1 and ZEUS Collaborations
arxiv created 2002/01/05 · arxiv updated 2009/11/30
Phenomenological studies on the proton structure function F2 have been carried out to investigate the behavior of F2, i.e. its x and Q2 dependence, in the transition from the deep-inelastic scattering region (Q2 >> 1 GeV2) to the photoproduction region (Q2 approx. 0 GeV2). An overview of various results of F2 at low Q2 is given. To quantify the behavior of F2 at low Q2, the derivatives dln(F2)/dln(x) for fixed Q2 and dF2/dlog(Q2) for fixed x haven been determined and compared to expectations within the framework of perturbative and non-perturbative QCD. Furthermore, the derivatives were compared to results of the total inclusive diffractive cross-section and vector-meson production. An interpretation of inclusive ep results is given in the framework of the GVD/CDP picture with special emphasis on the limit of Q2 --> 0 for fixed W2 and x --> for fixed Q2.