2005/11/29 by L. Schoeffel, Laurent Schoeffel, Schoeffel, Laurent
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0511322
proceedings of the EPS 2005 conference (Lisboa) 4 pages, 3 figures
arxiv created 2005/11/29 · openalex publication_date 2005/11/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent diffractive structure function measurements in deep inelastic scattering (DIS) by the H1 and ZEUS experiments at HERA are reviewed. In neutral current (NC) DIS, precise measurements have been made of diffraction, ep → eXY, the signature of which is a large rapidity gap (LRG) between the hadronic system X and the proton or one of its low-mass excited states Y. New results on charged current (CC) DIS are also presented. They are identified in a CC DIS sample by a large rapidity gap, corresponding to a diffractive process ep → νXY with a W boson exchange. Moreover, within the framework of QCD hard scattering factorisation in DIS, all these data provide constraints on the diffractive parton distribution functions of the proton and predict a large gluon content. For example, the resulting gluon distribution, extracted from the H1 measurements, carries an integrated fraction of about 70% of the exchanged momentum. Note that these functions are crucial inputs for the calculations of diffractive dijet or charm production in DIS. These parton distribution functions may also be applicable to hadron-hadron scattering provided that an additional rapidity gap survival probability is taken into account.