Impact parameter dependent colour glass condensate dipole model

Abstract

We show that the colour glass condensate dipole model of Iancu, Itakura and Munier, improved to include the impact parameter dependence, gives a good fit to the total gamma* p cross section measured at HERA if the anomalous dimension at the saturation scale, gamma_s, is treated as a free parameter. We find that the optimum value of gamma_s = 0.46 is close to the value determined from numerical solution of the Balitsky-Kovchegov equation. The impact parameter dependent saturation scale is generally less than 0.5 GeV^2 in the HERA kinematic regime for the most relevant impact parameters b ~ 2-3 GeV^{-1}. We compare predictions of the model to data on the longitudinal and heavy flavour structure functions, exclusive diffractive vector meson production and deeply virtual Compton scattering at HERA. The model is found to be deficient for observables sensitive to moderately small dipole sizes, where an alternative model with explicit DGLAP evolution performs better. The energy dependence of exclusive diffractive processes is shown to provide an important discriminator between different dipole model cross sections.

19 pages, 16 figures. Revised version published in Phys. Rev. D; new section added on longitudinal and heavy flavour structure functions

References in corpus (49)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Operator expansion for high-energy scattering
• Small-x F_2 Structure Function of a Nucleus Including Multiple Pomeron Exchanges
• Saturation Effects in Deep Inelastic Scattering at low $Q^2$ and its Implications on Diffraction
• Unitarization of the BFKL Pomeron on a Nucleus
• Factorization for hard exclusive electroproduction of mesons in QCD
• Saturation in Diffractive Deep Inelastic Scattering
• An Impact Parameter Dipole Saturation Model
• Exclusive diffractive processes at HERA within the dipole picture
• Saturation and BFKL dynamics in the HERA data at small x
• A Modification of the Saturation Model: DGLAP evolution
• Measurement of the neutral current cross section and F2 structure function for deep inelastic e+p scattering at HERA
• Exclusive photoproduction of J/psi mesons at HERA
• Elastic J/Psi Production at HERA
• Solution to the evolution equation for high parton density QCD
• Off-diagonal distributions fixed by diagonal partons at small $x$ and $\xi$
• Update of Parton Distributions at NNLO
• Measurement of deeply virtual Compton scattering at HERA
• The Energy Dependence of the Saturation Momentum from RG Improved BFKL Evolution
• Measurement of the Proton Structure Function F_2 at Very Low Q^2 at HERA
• Nuclear enhancement of universal dynamics of high parton densities
• Scanning the BFKL pomeron in elastic production of vector mesons at HERA
• Colour dipoles and rho, phi electroproduction
• Measurement of D*+- production and the charm contribution to F_2 in deep inelastic scattering at HERA
• Elastic Electroproduction of rho Mesons at HERA
• Towards a fitting procedure for deeply virtual Compton scattering at next-to-leading order and beyond
• Measurement of Deeply Virtual Compton Scattering and its t-dependence at HERA
• Saturation QCD predictions with heavy quarks at HERA
• Study of the Fundamental Structure of Matter with an Electron-Ion Collider
• Exclusive rho^0 production in deep inelastic scattering at HERA
• Measurement of F_2^ccbar and F_2^bbbar at High Q^2 using the H1 Vertex Detector at HERA
• Measurement of D^(*+-) Meson Production and F_2^c in Deep-Inelastic Scattering at HERA
• Measurement of F_2^{c\bar{c}} and F_2^{b\bar{b}} at Low Q^2 and x using the H1 Vertex Detector at HERA
• Inclusive $D^0$ and $D^{\ast }\pm$ Production in Deep Inelastic $ep$ Collisions at HERA
• Measurement of D*+- production in deep inelastic ep scattering at HERA
• Q^2 dependence of diffractive vector meson electroproduction
• Deep Inelastic Electron-Nucleon Scattering at the LHC
• Exclusive vector meson production at HERA from QCD with saturation
• A unified description of diffractive deep inelastic scattering with saturation
• Gluon Saturation in the Colour Dipole Model?
• Next-to-leading order corrections in exclusive meson production
• Quarkonium production in coherent hadron-hadron interactions at the LHC
• Pomeron loop and running coupling effects in high energy QCD evolution
• Gluon Distributions and Fits using Dipole Cross-Sections
• Heavy flavour production in DGLAP improved saturation model
• On the Range of Validity of the Dipole Picture
• Compatibility of phenomenological dipole cross sections with the Balitsky-Kovchegov equation
• High energy electroweak DVCS processes in neutrino-nucleon scattering

Cited by in corpus (130)

• Parton distributions for the LHC
• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
• Analysis of combined HERA data in the Impact-Parameter dependent Saturation model
• The Large Hadron-Electron Collider at the HL-LHC
• Impact-parameter dependent Color Glass Condensate dipole model and new combined HERA data
• Predictions for $p+$Pb Collisions at sqrt s_NN = 5 TeV
• Probing the Small-$x$ Gluon Tomography in Correlated Hard Diffractive Dijet Production in DIS
• Phenomenological Review on Quark-Gluon Plasma: Concepts vs. Observations
• An AdS/QCD holographic wavefunction for the rho meson and diffractive rho meson electroproduction
• Mining for Gluon Saturation at Colliders
• QCD saturation at the LHC: comparisons of models to p+p and A+A data and predictions for p+Pb collisions
• J/Psi production in ultraperipheral Pb+Pb and p+Pb collisions at energies available at the CERN Large Hadron Collider
• Exclusive vector meson production at high energies and gluon saturation
• Incoherent diffractive J/Psi-production in high energy nuclear DIS
• Shannon Information Entropy in Heavy-ion Collisions
• CGC predictions for p+A collisions at the LHC and signature of QCD saturation
• Gluon saturation and inclusive hadron production at LHC
• Saturation models of HERA DIS data and inclusive hadron distributions in p+p collisions at the LHC
• Diffractive Dijet Production in Deep Inelastic Scattering and Photon-Hadron Collisions in the Color Glass Condensate
• Measurement of the Longitudinal Proton Structure Function at HERA
• Event Generators for High-Energy Physics Experiments
• Gluon Tomography from Deeply Virtual Compton Scattering at Small-x
• Hadron multiplicity in pp and AA collisions at LHC from the Color Glass Condensate
• Gluon saturation and energy dependence of hadron multiplicity in pp and AA collisions at the LHC
• Color dipole predictions for the exclusive vector meson photoproduction in $pp/pPb/PbPb$ collisions at Run 2 LHC energies
• Multiplicity distributions in p+p, p+A and A+A collisions from Yang-Mills dynamics
• Investigation of diffractive photoproduction of $J/\Psi$ in hadronic collisions
• Soft processes at the LHC, II: Soft-hard factorization breaking and gap survival
• Massive quarks in NLO dipole factorization for DIS: Longitudinal photon
• Diffractive dijet production in impact parameter dependent saturation models
• Theoretical uncertainties in exclusive electroproduction S-wave heavy quarkonia
• Structure Functions
• Diffractive $\rho$ and $\varphi$ production at HERA using an AdS/QCD holographic light-front meson wavefunction
• Solution to the Balitsky-Kovchegov equation with the collinearly improved kernel including impact-parameter dependence
• Massive quarks at one loop in the dipole picture of Deep Inelastic Scattering
• Semi-inclusive photon-hadron production in pp and pA collisions at RHIC and LHC
• Energy dependence of the saturation scale and the charged multiplicity in pp and AA collisions
• The nuclear configurational entropy impact parameter dependence in the Color-Glass Condensate
• Could saturation effects be visible in a future electron-ion collider?
• Hadrons and direct photon in pp and pA collisions at LHC and saturation effects
• Study of exclusive photoproduction of charmonium in ultra-peripheral lead-lead collisions
• Spin effects in the pion holographic light-front wavefunction
• Quantum chromodynamics at high energy and statistical physics
• Comparing AdS/CFT Calculations to HERA F_2 Data
• Diffractive charmonium spectrum in high energy collisions in the basis light-front quantization approach
• Multiple interactions and rapidity gap survival
• Charged particle multiplicities in pA interactions at the LHC from the Color Glass Condensate
• Direct photons at forward rapidities in high-energy pp collisions
• On theoretical uncertainty of color dipole phenomenology in the J/Psi and Upsilon photoproduction in pA and AA collisions at the CERN Large Hadron Collider
• Comparison of the Color Glass Condensate to multiplicity dependence of the average transverse momentum in p+p, p+Pb and Pb+Pb collisions at the LHC
• Extracting the Distribution Amplitudes of the rho meson from the Color Glass Condensate
• Drell-Yan phenomenology in the color dipole picture revisited
• Exclusive vector meson production in electron-ion collisions
• Heavy flavor production in high-energy $pp$ collisions: color dipole description
• Dipole model analysis of high precision HERA data
• The coherent cross section of vector mesons in ultraperipheral PbPb collisions at the LHC
• Intrinsic charm contribution to the prompt atmospheric neutrino flux
• Review of High Energy Diffraction in Real and Virtual Photon Proton scattering at HERA
• CGC/saturation approach: a new impact-parameter dependent model in the next-to-leading order of perturbative QCD
• The energy-momentum tensor at the earliest stage of relativistic heavy ion collisions
• CGC/saturation approach: a new impact-parameter dependent model
• $J/\psi$ production in hadron scattering: three-pomeron contribution
• Gluon saturation and Feynman scaling in leading neutron production
• Heavy Quark Photoproduction in Coherent Interactions at High Energies
• Transverse energy and charged particle production in heavy-ion collisions: From RHIC to LHC
• Deeply virtual Compton scattering at small-$x$ in future Electron - Ion Colliders
• $D$ - meson production at very forward rapidities: estimating the intrinsic charm contribution
• Production mechanisms of open-heavy flavor mesons
• Nuclear DVCS at small-x using the color dipole phenomenology
• Nuclear effects in Drell-Yan pair production in high-energy $pA$ collisions
• The New F_L Measurement from HERA and the Dipole Model
• Exclusive photoproduction of vector meson at next-to-leading order from Color Glass Condensate
• Diffractive electron-nucleus scattering and ancestry in branching random walks
• Testing Non-linear Evolution with Running Coupling Corrections in $ep$ and $pp$ collisions
• Heavy quarkonia production at LHC and EIC using Basis Light-Front Quantization wavefunctions
• Baryon stopping in the Color Glass Condensate formalism: A phenomenological study
• Diffractive deep inelastic scattering in an AdS/CFT inspired model: A phenomenological study
• Incoherent vector mesons production in PbPb ultraperipheral collisions at the LHC
• Exclusive processes with a leading neutron in $ep$ collisions
• Inclusive heavy quark photoproduction in $pp$, $pPb$ and $PbPb$ collisions at Run 2 LHC energies
• BFKL Evolution as a Communicator Between Small and Large Energy Scales
• On the rapidity dependence of the average transverse momentum in hadronic collisions
• Exclusive photoproduction of vector mesons in proton-lead ultraperipheral collisions at the LHC
• Color Glass Condensate and its relation to HERA physics
• Geometric Scaling in Mueller-Navelet Jets
• Heavy quark production in deep inelastic electron-nucleus scattering
• The color dipole model bounds with the gluon-gluon recombination correction
• Exclusive heavy quark-pair production in ultraperipheral collisions
• Gluon saturation and inclusive production at low transverse momenta
• Rapidity gap survival probability and total cross sections
• A CGC/saturation approach for angular correlations in proton-proton scattering
• Geometric scaling behavior of the scattering amplitude for DIS with nuclei
• Exclusive processes in $ep$ collisions at the EIC and LHeC: A closer look on the predictions of saturation models
• Heavy quark production in photon - Pomeron interactions at hadronic colliders
• Diffractive $\rho$ production at small $x$ in future Electron - Ion Colliders
• Photoproduction of vector mesons in proton-proton ultraperipheral collisions at the CERN Large Hadron Collider
• Beyond DGLAP improved saturation model
• Exclusive vector meson productions with the analytical solution of Balitsky-Kovchegov Equation
• Non-linear evolution in the re-summed next-to-leading order of perturbative QCD:\confronting the experimental data
• The Longitudinal Structure Function at HERA
• Physical limits in the Color Dipole Model Bounds
• BFKL equation with running QCD coupling and HERA data
• The improved saturation model in nuclei
• Multiplicity dependence of ${\chi }_c$ and ${\chi }_b$ meson production
• Exclusive diffractive J/psi and Psi(2S) production in dipole model using a holographic AdS/QCD light front wavefunction with longitudinal confinement
• Exclusive vector meson production with leading neutrons in a saturation model for the dipole amplitude in mixed space
• Soft Pomeron in the Colour Glass Condensate approach
• Strangeness production in high-multiplicity events
• CGC/saturation approach: an impact-parameter dependent model for diffraction production in DIS
• On the Nuclear Modification Factor at RHIC and LHC
• CGC and saturation approach: Impact-parameter dependent model of perturbative QCD and combined HERA data
• Inclusive gauge boson production in the color dipole formalism
• Low-$x$ Physics in $pA$ Collisions and at the EIC
• Electroproduction of $D$- and $B$-mesons in high-multiplicity $ep$ collisions
• Photoproduction of ${\eta }_c\gamma$ pairs in CGC framework
• Effective Field Theory Factorization for Diffraction
• Dipole model analysis of the new HERA I+II data
• Neutral current neutrino-nucleus interactions at high energies
• Inelastic nuclear screening for different secondaries produced in p+Pb collisions at LHC energy
• Exclusive Diffractive Processes within the Dipole Picture
• Heavy quark photoproduction in $pp$ coherent interactions at LHC
• Constraining the rho meson wavefunction
• Summary of the HERA-LHC workshop
• Elastic and inelastic $J/\psi$ photoproduction in $p$-$p$ collisions at LHC energies: the feature of Weizsäcker-Williams approximation
• Extraction of the color dipole amplitude with physics-informed neural networks
• Diffractive vector meson production in ultraperipheral heavy ion collisions from the Color Glass Condensate
• Predictions for Diffractive $\varphi$ Meson Production Using an AdS/QCD Light-front Wavefunction
• Reconstruction of the Dipole Amplitude in the Dipole Picture as a mathematical Inverse Problem
• Evaluating the ratio of the exclusive vector meson photoproduction to inclusive hadron/jet production cross section in ultraperipheral heavy ion collisions
• Evolution of entropy at small $x$