Diphoton production in high-energy p+A collisions

Abstract

We consider semi-inclusive diphoton+jet and inclusive diphoton production in high-energy proton-nucleus collisions, treating the target nucleus as a Color-Glass-Condensate and the projectile proton in the parton model. We obtain the prompt diphoton production cross-section in terms of fragmentation and direct contributions. The fragmentation part is given in terms of single-photon and double-photon fragmentation functions. We study prompt, direct and fragmentation diphoton correlations in p+p and p+A collisions at the LHC, and show that at low values of transverse momenta of the produced photon pair, these correlations are sensitive to saturation effects. We show that back-to-back (de)-correlations in prompt diphoton production are stronger in fragmentation part than in the direct one.

arXiv comment17 pages, 8 figures; v2: results unchanged, a clarifying footnote added. The version to appear in PRD

References in corpus (96)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Parton distributions for the LHC
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• Computing Quark and Gluon Distribution Functions for Very Large Nuclei
• Operator expansion for high-energy scattering
• Gluon Distribution Functions for Very Large Nuclei at Small Transverse Momentum
• Small-x F_2 Structure Function of a Nucleus Including Multiple Pomeron Exchanges
• Nonlinear Gluon Evolution in the Color Glass Condensate: I
• The Color Glass Condensate
• The Wilson renormalization group for low x physics: towards the high density regime
• Green's Functions in the Color Field of a Large Nucleus
• The BFKL Equation from the Wilson Renormalization Group
• Nonlinear Gluon Evolution in the Color Glass Condensate: II
• Unitarization of the BFKL Pomeron on a Nucleus
• Hadron production in nuclear collisions at RHIC and high density QCD
• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• Fluctuating Glasma initial conditions and flow in heavy ion collisions
• NLO evolution of color dipoles
• Quark contribution to the small-$x$ evolution of color dipole
• Event-by-event gluon multiplicity, energy density and eccentricities at RHIC and LHC
• Glasma flux tubes and the near side ridge phenomenon at RHIC
• Triumvirate of Running Couplings in Small-x Evolution
• Thermal Dileptons at LHC
• Heavy-Quark Kinetics in the QGP at LHC
• The Color Glass Condensate and hadron production in the forward region
• Heavy Ion Collisions at the LHC - Last Call for Predictions
• Fock Space Distributions, Structure Functions, Higher Twists and Small x
• AAMQS: A non-linear QCD analysis of new HERA data at small-x including heavy quarks
• Comparison of the Color Glass Condensate to di-hadron correlations in proton-proton and proton-nucleus collisions
• The ridge in proton-proton collisions at the LHC
• Initial state geometry and the role of hydrodynamics in proton-proton, proton-nucleus and deuteron-nucleus collisions
• Fully differential Higgs boson production and the di-photon signal through next-to-next-to-leading order
• Analysis of combined HERA data in the Impact-Parameter dependent Saturation model
• Cross section of isolated prompt photons in hadron-hadron collisions
• Color Glass Condensate at the LHC: hadron multiplicities in $pp$, $pA$ and $AA$ collisions
• Gluon saturation and initial conditions for relativistic heavy ion collisions
• Diphoton production at hadron colliders: a fully-differential QCD calculation at NNLO
• A full Next to Leading Order study of direct photon pair production in hadronic collisions
• Implications of a Modified Higgs to Diphoton Decay Width
• A new critical study of photon production in hadronic collisions
• Search for the Standard Model Higgs boson in the diphoton decay channel with 4.9 fb-1 of pp collisions at sqrt(s) = 7 TeV with ATLAS
• Forward inclusive dijet production and azimuthal correlations in pA collisions
• Update of Parton Distributions at NNLO
• 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 Color Glass Condensate dipole model and new combined HERA data
• CGC predictions for p+Pb collisions at the LHC
• Two-Loop Amplitudes for Gluon Fusion into Two Photons
• Predictions for $p+$Pb Collisions at sqrt s_NN = 5 TeV
• Long Range Correlations and the Soft Ridge in Relativistic Nuclear Collisions
• Quantitative constraints on the gluon distribution function in the proton from collider isolated-photon data
• Angular Correlations in Gluon Production at High Energy
• Jalilian-Marian, Iancu, McLerran, Weigert, Leonidov, Kovner evolution at next to leading order
• QCD saturation at the LHC: comparisons of models to p+p and A+A data and predictions for p+Pb collisions
• Photon production in high energy proton-nucleus collisions
• Isolating a light Higgs boson from the di-photon background at the LHC
• Suppression of back-to-back hadron pairs at forward rapidity in d+Au Collisions at sqrt(s_NN)=200 GeV
• Forward dihadron correlations in deuteron-gold collisions with a Gaussian approximation of JIMWLK
• CGC predictions for p+A collisions at the LHC and signature of QCD saturation
• Gluon saturation and inclusive hadron production at LHC
• Angular and long range rapidity correlations in particle production at high energy
• Geometric scaling violations in the central rapidity region of d+Au collisions at RHIC
• Running coupling and power corrections in nonlinear evolution at the high--energy limit
• Prompt photon production and photon-hadron correlations at RHIC and the LHC from the Color Glass Condensate
• The Ridge from the BFKL evolution and beyond
• Probing colored glass via $q\bar{q}$ photoproduction
• Photon-Hadron Jet Correlations in p+p and Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Calculation of prompt diphoton production cross sections at Tevatron and LHC energies
• Photon Pair Production with Soft Gluon Resummation in Hadronic Interactions
• 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
• On Angular Correlations and High Energy Evolution
• Saturation and shadowing in high-energy proton-nucleus dilepton production
• Two Particle Correlations at Forward Rapidity in STAR
• Two-particle correlations in high energy collisions and the gluon four-point function
• Higher-point correlations from the JIMWLK evolution
• Large Scale Rapidity Correlations in Heavy Ion Collisions
• Azimuthal anisotropy of direct photons
• Hadron production in pA collisions at the LHC from the Color Glass Condensate
• Beyond leading order effects in photon pair production at the Tevatron
• Two photons plus jet al LHC: the NNLO contribution from the gg initiated process
• Semi-inclusive photon-hadron production in pp and pA collisions at RHIC and LHC
• Diphoton Background to Higgs Boson Production at the LHC with Soft Gluon Effects
• Direct photons and dileptons via color dipoles
• Hadrons and direct photon in pp and pA collisions at LHC and saturation effects
• Drell-Yan Lepton-Pair-Jet Correlation in pA collisions
• Azimuthal Asymmetry of Prompt Photons in Nuclear Collisions
• Higgs Boson Production at Hadron Colliders with Soft Gluon Effects: I. Backgrounds
• Charged particle multiplicities in pA interactions at the LHC from the Color Glass Condensate
• Direct photons at forward rapidities in high-energy pp collisions
• 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
• Probing colored glass via $q\bar{q}$ photoproduction II: diffraction
• Investigating the high energy QCD approaches for prompt photon production at the LHC
• Hadron and Photon Production in the Forward Region at RHIC and LHC
• Impact of QCD Corrections on the Search for the Intermediate Mass Higgs Boson
• Photon plus heavy quark production in high energy collisions within the target rest frame formalism

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• Prompt double $J/\psi$ production in proton-proton collisions at the LHC
• Harmonics of Parton Saturation in Lepton-Jet Correlations at the EIC
• Directed flow from C-odd gluon correlations at small $x$
• Photon-jet ridge at RHIC and the LHC
• Di-photon "Ridge" in p+p and p+A collisions at RHIC and the LHC
• Electromagnetic currents induced by color fields
• The color dipole picture for prompt photon production in $pp$ and $pPb$ collisions at the CERN-LHC
• DPS in CGC: HBT correlations in double inclusive photon production
• Mapping the internal structure of hadrons through color and spin effects