Probing parton saturation with forward $Z^0$-boson production at small transverse momentum in p+p and p+A collisions

Abstract

We calculate and compare the differential cross sections for forward $Z^0$-boson production at small transverse momentum, in proton-proton and proton-nucleus collisions, using both the collinear and dilute-dense factorization frameworks. In both cases, we implement a Sudakov resummation of the large logarithms generated by soft-gluon emissions, which is essential in order to describe the transverse momentum distribution of forward $Z^0$ bosons measured at the Tevatron and the LHC. We further compute the nuclear modification factor in the dilute-dense framework, hoping to single out signals of saturation effects at small values of $x$. Our predictions are compared with those obtained in the collinear factorization framework, using two different nuclear parton distribution functions.

arXiv commentReferences added. Published version

References in corpus (59)

• Computing Quark and Gluon Distribution Functions for Very Large Nuclei
• New parton distribution functions from a global analysis of quantum chromodynamics
• The Color Glass Condensate
• QCD Factorization for Semi-Inclusive Deep-Inelastic Scattering at Low Transverse Momentum
• EPPS16: Nuclear parton distributions with LHC data
• nCTEQ15 - Global analysis of nuclear parton distributions with uncertainties in the CTEQ framework
• Universality of Unintegrated Gluon Distributions at small x
• Tevatron Run-1 Z Boson Data and Collins-Soper-Sterman Resummation Formalism
• Determination of nuclear parton distribution functions and their uncertainties at next-to-leading order
• QCD Factorization for Spin-Dependent Cross Sections in DIS and Drell-Yan Processes at Low Transverse Momentum
• The Color Glass Condensate and hadron production in the forward region
• AAMQS: A non-linear QCD analysis of new HERA data at small-x including heavy quarks
• Parton Saturation at Small x and in Large Nuclei
• Global Analysis of Nuclear Parton Distributions
• The Nonperturbative Regime in QCD Resummation for Gauge Boson Production at Hadron Colliders
• Forward inclusive dijet production and azimuthal correlations in pA collisions
• Azimuthal correlations of forward di-hadrons in d+Au collisions at RHIC in the Color Glass Condensate
• Production of Drell--Yan lepton pairs in hadron collisions: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
• One-loop Factorization for Inclusive Hadron Production in $pA$ Collisions in the Saturation Formalism
• Sudakov Double Logarithms Resummation in Hard Processes in Small-x Saturation Formalism
• The Transverse Momentum and Total Cross Section of E+ E- Pairs in the Z-Boson Region from P Anti-P Collisions at s**(1/2) = 1.8-Tev
• Measurement of the shape of the boson transverse momentum distribution in ppbar -> Z/gamma* -> ee+X events produced at sqrt{s}=1.96 TeV
• Suppression of back-to-back hadron pairs at forward rapidity in d+Au Collisions at sqrt(s_NN)=200 GeV
• TMD Evolution: Matching SIDIS to Drell-Yan and W/Z Boson Production
• Role of the nonperturbative input in QCD resummed Drell-Yan $Q_T$-distributions
• Forward dihadron correlations in deuteron-gold collisions with a Gaussian approximation of JIMWLK
• Sudakov Resummation in Small-x Saturation Formalism
• Global analysis of nuclear parton distribution functions and their uncertainties at next-to-next-to-leading order
• Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders
• Particle Production at High Energy and Large Transverse Momentum - "The Hybrid Formalism" Revisited
• Back-to-Back Correlations of Di-hadrons in dAu Collisions at RHIC
• QCD prediction for heavy boson transverse momentum distributions
• Transverse-momentum resummation: a perturbative study of Z production at the Tevatron
• Novel Phenomenology of Parton Distributions from the Drell-Yan Process
• From DIS to proton-nucleus collisions in the Color Glass Condensate model
• Vector boson production in hadronic collisions
• Dilepton production from the Color Glass Condensate
• Forward Z-boson production and the unintegrated sea quark density
• Soft Gluon Resummations in Dijet Azimuthal Angular Correlations at the Collider
• Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at sqrt(s)=7 TeV with the ATLAS detector
• Study of Z boson production in pPb collisions at sqrt(s[NN]) = 5.02 TeV
• Semi-inclusive Deep Inelastic Scattering at small x
• Predictions for Drell-Yan ϕ* and Q_T observables at the LHC
• Measurement of the normalized Z/gamma*->mu+mu- transverse momentum distribution in p\bar{p} collisions at sqrt{s}=1.96 TeV
• The color dipole picture of the Drell-Yan process
• Saturation and shadowing in high-energy proton-nucleus dilepton production
• Forward di-hadron back-to-back correlations in $\mathbf{pA}$ collisions from rcBK evolution
• Transverse Momentum Resummation for Dijet Correlation in Hadronic Collisions
• Scheme dependence and Transverse Momentum Distribution interpretation of Collins-Soper-Sterman resummation
• On the Dihadron Angular Correlations in Forward $pA$ collisions
• Nuclear parton distributions and the Drell-Yan process
• Broadening and saturation effects in dijet azimuthal correlations in p-p and p-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathbf{NN}}}=$ 5.02 TeV
• Drell-Yan production and Lam-Tung relation in the Color Glass Condensate formalism
• Running Coupling Corrections to High Energy Inclusive Gluon Production
• Nuclear modification of vector boson production in proton-lead collisions at the LHC
• Drell-Yan Lepton-Pair-Jet Correlation in pA collisions
• Collinear Singularities and Running Coupling Corrections to Gluon Production in CGC
• Drell-Yan process at forward rapidity at the LHC
• Initial and Final State Interaction Effects in Small-x Quark Distributions

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• Energy evolution of T-odd gluon TMDs at small $x$
• Trijets in kt-factorisation: matrix elements vs parton shower
• Exploring non-perturbative Sudakov factor via $Z^0$-boson production in $pp$ collisions
• Dijet photoproduction at low $x$ at next-to-leading order and its back-to-back limit
• Photoproduction of three jets in the CGC: gluon TMDs and dilute limit