Saturation models of HERA DIS data and inclusive hadron distributions in p+p collisions at the LHC

Abstract

Unintegrated gluon distributions sensitive to the transverse spatial distribution of gluons in the proton are extracted from data on exclusive and diffractive final states at HERA in the dipole approach. These unintegrated gluon distributions can be used to compute inclusive hadron production in p+p collisions at the LHC. In this paper, we consider a number of saturation models with differering dynamical assumptions that give good fits to the available HERA data. We apply these models to study the rapidity and transverse momentum dependence of the LHC data up to $\sqrt{s}=7$ TeV. We examine the sensitivity of these results to parameters that are not constrained by the HERA data and comment on similarities and differences with previous work. We compute the n-particle inclusive multiplicity distribution and show that the LHC p+p results are in agreement with predictions for multi-particle production in the Color Glass Condensate approach. This result has significant ramifications for the interpretation of multi-particle correlations in high multiplicity events at the LHC.

16 pages, 11 figures; v3: revised version corrects for an error in the p_T distributions. The corrected results further improve agreement with data. The changes do not affect other results in the paper

References in corpus (24)

• Glauber Modeling in High Energy Nuclear Collisions
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Some Features of the Glasma
• NLO evolution of color dipoles
• Quark contribution to the small-$x$ evolution of color dipole
• Triumvirate of Running Couplings in Small-x Evolution
• Non-linear QCD meets data: A global analysis of lepton-proton scattering with running coupling BK evolution
• Solving The High Energy Evolution Equation Including Running Coupling Corrections
• Azimuthal correlations of forward di-hadrons in d+Au collisions at RHIC in the Color Glass Condensate
• Impact parameter dependent colour glass condensate dipole model
• Single Inclusive Hadron Production at RHIC and the LHC from the Color Glass Condensate
• Wilson line correlator in the MV model: relating the glasma to deep inelastic scattering
• High energy factorization in nucleus-nucleus collisions
• Saturation QCD predictions with heavy quarks at HERA
• Gluon saturation and inclusive hadron production at LHC
• High energy factorization in nucleus-nucleus collisions II - Multigluon correlations
• High energy factorization in nucleus-nucleus collisions III. Long range rapidity correlations
• Long Range Forward-Backward Correlations and the Color Glass Condensate
• Saturation and Scaling of Multiplicity, Mean p_T and p_T Distributions from 200 GeV < sqrt{s} < 7 TeV - Addendum
• Saturation physics at HERA and RHIC: An unified description
• Further success of the colour dipole model
• Particle production in field theories coupled to strong external sources. II: Generating functions
• Limiting fragmentation in hadron-hadron collisions at high energies
• Three-particle correlation from glasma flux tubes

Cited by in corpus (79)

• Collective flow and viscosity in relativistic heavy-ion collisions
• Fluctuating Glasma initial conditions and flow in heavy ion collisions
• Event-by-event anisotropic flow in heavy-ion collisions from combined Yang-Mills and viscous fluid dynamics
• QCD and strongly coupled gauge theories: challenges and perspectives
• Event-by-event gluon multiplicity, energy density and eccentricities at RHIC and LHC
• Comparison of the Color Glass Condensate to di-hadron correlations in proton-proton and proton-nucleus collisions
• Initial state geometry and the role of hydrodynamics in proton-proton, proton-nucleus and deuteron-nucleus collisions
• Analysis of combined HERA data in the Impact-Parameter dependent Saturation model
• Novel Collective Phenomena in High-Energy Proton-Proton and Proton-Nucleus Collisions
• Collective dynamics of the high-energy proton-nucleus collisions
• Single inclusive particle production at high energy from HERA data to proton-nucleus collisions
• Azimuthal collimation of long range rapidity correlations by strong color fields in high multiplicity hadron-hadron collisions
• Correlations from hydrodynamic flow in p-Pb collisions
• Impact-parameter dependent Color Glass Condensate dipole model and new combined HERA data
• Predictions for $p+$Pb Collisions at sqrt s_NN = 5 TeV
• Explanation of systematics of CMS p+Pb high multiplicity di-hadron data at ${\sqrt{s}}_{\mathrm{NN}}=5.02$ TeV
• Revealing proton shape fluctuations with incoherent diffraction at high energy
• QCD saturation at the LHC: comparisons of models to p+p and A+A data and predictions for p+Pb collisions
• Integrated Dynamical Approach to Relativistic Heavy Ion Collisions
• Color Glass Condensate at next-to-leading order meets HERA data
• Gluon saturation in $pA$ collisions at the LHC: KLN model predictions for hadron multiplicities
• Diffractive Dijet Production in Deep Inelastic Scattering and Photon-Hadron Collisions in the Color Glass Condensate
• Diffractive Dijet Production and Wigner Distributions from the Color Glass Condensate
• Saturation and Scaling of Multiplicity, Mean p_T and p_T Distributions from 200 GeV < sqrt{s} < 7 TeV - Addendum
• KNO scaling of fluctuations in pp and pA, and eccentricities in heavy-ion collisions
• Gluon saturation and energy dependence of hadron multiplicity in pp and AA collisions at the LHC
• Multiplicity distributions in p+p, p+A and A+A collisions from Yang-Mills dynamics
• Towards the Little Bang Standard Model
• Scattering of Dark Particles with Light Mediators
• Gluon saturation and entropy production in proton proton collisions
• An overview of experimental results from ultra-relativistic heavy-ion collisions at the CERN LHC: bulk properties and dynamical evolution
• Two-gluon correlations and initial conditions for small-x evolution
• Intrinsic Fluctuations of the Proton Saturation Momentum Scale in High Multiplicity p+p Collisions
• Event engineering studies for heavy flavor production and hadronization in high multiplicity hadron-hadron and hadron-nucleus collisions
• Single Spin Asymmetry Scaling in the Forward Rapidity Region at RHIC
• Improved Geometrical Scaling at the LHC
• 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
• Systematics of strong nuclear amplification of gluon saturation from exclusive vector meson production in high energy electron-nucleus collisions
• Energy dependence of the ridge in high multiplicity proton-proton collisions
• Investigating the inclusive transverse spectra in high-energy $pp$ collisions in the context of geometric scaling framework
• Isolated photon production in proton-nucleus collisions at forward rapidity
• Holographic Pomeron: Saturation and DIS
• Charged particle multiplicities in pA interactions at the LHC from the Color Glass Condensate
• Geometrical Scaling and the Dependence of the Average Transverse Momentum on the Multiplicity and Energy for the ALICE Experiment
• Sivers Function in the Quasi-Classical Approximation
• 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
• Geometrical Scaling in Inelastic Inclusive Particle Production at the LHC
• Saturation and forward jets in proton-lead collisions at the LHC
• Photon-jet ridge at RHIC and the LHC
• CGC/saturation approach: a new impact-parameter dependent model in the next-to-leading order of perturbative QCD
• CGC/saturation approach: a new impact-parameter dependent model
• Weibull model of Multiplicity Distribution in hadron-hadron collisions
• A model for strong interactions at high energy based on the CGC/saturation approach
• Imprinting Quantum Fluctuations on Hydrodynamic Initial Conditions
• Testing the running coupling $k_T$-factorization formula for the inclusive gluon production
• Saturation momentum scale extracted from semi-inclusive transverse spectra in high-energy pp collisions
• Inclusive hadron and photon production at LHC in dipole momentum space
• Stretched String with Self-Interaction at High Resolution: Spatial Sizes and Saturation
• Complete Next-to-Leading Order Calculation of Single Inclusive ${\pi }^0$ Production in Forward Proton-Nucleus Collisions
• Particle multiplicities in the central region of high-energy collisions from $k_T$-factorization with running coupling corrections
• Scaling properties of direct photon yields in heavy ion collisions
• A CGC/saturation approach for angular correlations in proton-proton scattering
• Non-linear evolution in the re-summed next-to-leading order of perturbative QCD:\confronting the experimental data
• Exclusive vector meson productions with the analytical solution of Balitsky-Kovchegov Equation
• Investigating saturation effects and the virtual pion in leading neutron events at HERA with the dipole model
• Multiplicity distributions in the forward rapidity region in proton-proton collisions at the Large Hadron Collider
• Universality of multiplicity distribution in proton-proton and electron-positron collisions
• Soft Pomeron in the Colour Glass Condensate approach
• Fluctuations and the rapidity dependence of charged particles spectra in fixed centrality bins in p$A$ collisions
• CGC and saturation approach: Impact-parameter dependent model of perturbative QCD and combined HERA data
• CGC/saturation approach: an impact-parameter dependent model for diffraction production in DIS
• Inelastic nuclear screening for different secondaries produced in p+Pb collisions at LHC energy
• Momentum space saturation model for deep inelastic scattering and single inclusive hadron production
• Structure of the medium formed in heavy ion collisions
• Transverse Spin and Classical Gluon Fields: Combining Two Perspectives on Hadronic Structure
• Energy Dependent Growth of Nucleon and Inclusive Charged Hadron Distributions
• Signatures of gluon saturation from structure-function measurements