Measurement of the diffractive structure function in deep inelastic scattering at HERA

Abstract

This paper presents an analysis of the inclusive properties of diffractive deep inelastic scattering events produced in $ep$ interactions at HERA. The events are characterised by a rapidity gap between the outgoing proton system and the remaining hadronic system. Inclusive distributions are presented and compared with Monte Carlo models for diffractive processes. The data are consistent with models where the pomeron structure function has a hard and a soft contribution. The diffractive structure function is measured as a function of $\xpom$, the momentum fraction lost by the proton, of $\beta$, the momentum fraction of the struck quark with respect to $\xpom$, and of $Q^2$. The $\xpom$ dependence is consistent with the form \xpoma where $a=1.30\pm 0.08(stat){}_{-0.14}^{+0.08}(sys)$ in all bins of $\beta$ and $Q^2$. In the measured $Q^2$ range, the diffractive structure function approximately scales with $Q^2$ at fixed $\beta$. In an Ingelman-Schlein type model, where commonly used pomeron flux factor normalisations are assumed, it is found that the quarks within the pomeron do not saturate the momentum sum rule.

36 pages, latex, 11 figures appended as uuencoded file

References in corpus (4)

• First Measurement of the Deep--Inelastic Structure of Proton Diffraction
• Diffractive Dissociation in Deep Inelastic Scattering at HERA
• Observation of hard scattering in photoproduction events with a large rapidity gap at HERA
• Probing Lumps of Wee Partons in Deep Inelastic Scattering

Cited by in corpus (89)

• LEPTO 6.5 - A Monte Carlo Generator for Deep Inelastic Lepton-Nucleon Scattering
• Measurement and QCD Analysis of the Diffractive Deep-Inelastic Scattering Cross Section at HERA
• Nuclear Deep-Inelastic Lepton Scattering and Coherence Phenomena
• Diffractive Deep-Inelastic Scattering with a Leading Proton at HERA
• HERA Collider Physics
• POMERON FLUX RENORMALIZATION IN SOFT AND HARD DIFFRACTION
• Leading neutron production in $e^{+}p$ collisions at HERA
• Behavior of Diffractive Parton Distribution Functions
• Observation of Diffractive W Boson Production at the Tevatron
• Paving the Way Towards Precision Physics in Saturation Studies Through Exclusive Diffractive Light Neutral Vector Meson Production
• Large Rapidity Gap Events in Deep Inelastic Scattering
• Diffractive Production of Jets and Weak Bosons, and Tests of Hard-Scattering Factorization
• Fracture functions from cut vertices
• Quark-Antiquark Production in DIS Diffractive Dissociation
• Quark-Antiquark Jets in DIS Diffractive Dissociation
• The survival probability of large rapidity gaps in a three channel model
• Leading proton production in e^+p collisions at HERA
• Unitarity effects in hard diffraction at HERA
• Proton structure functions in the dipole picture of BFKL dynamics
• Nuclear shadowing in deep inelastic scattering on nuclei: leading twist versus eikonal approaches
• Semiclassical Approach to Structure Functions at Small x
• Measurement of the Diffractive Deep-Inelastic Scattering Cross Section with a Leading Proton at HERA
• Diffractive dijet production at HERA
• HERA-data in the light of small x evolution with state of the art NLO input
• The QCD description of diffractive processes
• Diffractive deeply inelastic scattering of hadronic states with small transverse size
• Measurement of the open-charm contribution to the diffractive proton structure function
• Gluon Radiation in Diffractive Electroproduction
• Excitation of open charm and factorization breaking in rapidity gap events at HERA
• The $Q^2$ dependence of the hard diffractive photoproduction of vector meson or photon and the range of pQCD validity
• Inclusive Measurement of Diffractive Deep-Inelastic Scattering at HERA
• Hard scattering factorization and light cone hamiltonian approach to diffractive processes
• Azimuthal Distribution of Quark-Antiquark Jets in DIS Diffractive Dissociation
• Double Pomeron Jet Cross Sections
• Diffractive Higgs boson production at the Tevatron and LHC
• Diffractive Parton Distributions in the Semiclassical Approach
• Soft Color Interactions and Diffractive Hard Scattering at the Fermilab Tevatron
• Strangeness Production in Deep-Inelastic Positron-Proton Scattering at HERA
• Hard Diffraction From Quasi-Elastic Dipole Scattering
• Measurements of Single Diffraction at sqrt(s) = 630 GeV; Evidence for a Non-Linear alpha(t) of the Pomeron
• Review of High Energy Diffraction in Real and Virtual Photon Proton scattering at HERA
• Diffractive Dijet Production at sqrt(s)=630 and 1800 GeV at the Fermilab Tevatron
• Reggeon and pion contributions in semi-exclusive diffractive processes at HERA
• High-mass diffraction in the QCD dipole picture
• Analytical asymptotics for hard diffraction
• Novel features of diffraction at the LHC
• Rapidity gaps in perturbative QCD
• Factorization properties of the diffraction dissociation of longitudinal photons
• High energy factorization predictions for the charm structure function F2^c at HERA
• Rapidity gap distribution in diffractive deep-inelastic scattering and parton genealogy
• The proton and the photon, who is probing who?
• Analysis on the diffractive production of W's and dijets at the DESY HERA and Fermilab Tevatron colliders
• Measurement of diffractive production of D*+-(2010) mesons in deep inelastic scattering at HERA
• A Tale of Two Hard Pomerons
• Inelastic diffraction and color-singlet gluon-clusters in high-energy hadron-hadron and lepton-hadron collisions
• Charm as a Key to Diffractive Processes
• Diffractive Production of $b\bar{b}$ in Proton - Antiproton Collision at the Tevatron
• A global analysis of diffractive events at HERA
• Subleading Reggeons in Deep Inelastic Diffractive Scattering at HERA
• Diffractive J/psi production as a probe of the gluon component in the Pomeron
• Can one probe the structure function of the pomeron?
• On the low x behaviour of nuclear shadowing
• Rapidity gap distribution in diffractive dissociation: predictions for future electron-ion colliders
• Diffractive Higgs Production at the LHC
• Unitarization of Gluon Exchange Amplitudes and Rapidity Gaps at the Tevatron
• Associated jpsi + gamma diffractive production: the nature of Pomeron and test of hard diffractive factorization
• Diffractive Dissociation In The Interacting Gluon Model
• Systematics of Leading Particle Production
• A Screened BFKL Interpretation of $F_2$ in the Exceedingly Small x Limit
• Soft Colour Interactions and the Diffractive Structure Function
• Formation of color-singlet gluon-clusters and inelastic diffractive scattering
• The compatibility of diffractive hard scattering in p pbar and ep collisions
• QCD: Quantum Chromodynamic Diffraction
• Colorless and colored gluon-clusters in nucleon?
• Renormalized diffractive cross sections at HERA and the structure of the pomeron
• Diffraction at HERA: experimental perspective
• Non-Linear Pomeron Trajectory in Diffractive Deep Inelastic Scattering
• Diffraction in Charged Current DIS
• Diffractive Deep Inelastic Scattering: the hadronic nature of Quarks
• Spin Asymmetries In Diffractive $J/\Psi$ Leptoproduction
• Extracting the Pomeron-Pomeron Cross Section from Diffractive Mass Spectra
• Regge Analysis of Diffractive and Leading Baryon Structure Functions from DIS
• Statistical properties of partonic configurations and diffractive dissociation in high-energy electron-nucleus scattering
• A characteristic plot of pomeron-exchanged processes in diffractive DIS
• Energy Dependence of the Contribution of Pion Exchange to Large-Rapidity-Gap Events in Deep Inelastic Scattering
• Charm Contribution to the Structure Function in Diffractive Deep Inelastic Scattering
• Diffraction at HERA - An Experimentalist's View
• Charged Particle Multiplicity in Diffractive Deep Inelastic Scattering
• Diffraction at RHIC