Exploring the polarization of gluons in the nucleon

Abstract

We give an overview of the current status of investigations of the polarization of gluons in the nucleon. We describe some of the physics of the spin-dependent gluon parton distribution and its phenomenology in high-energy polarized hadronic scattering. We also review the recent experimental results.

arXiv comment10 pages, 13 figures. Talk presented at the "Second Meeting of the APS Topical Group on Hadronic Physics", Nashville, Tennessee, October 22-24, 2006. Reference added

References in corpus (47)

• Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off
• Higher Order Corrections to Jet Cross Sections in Hadron Colliders
• Models for the Polarized Parton Distributions of the Nucleon
• Mid-Rapidity Neutral Pion Production in Proton-Proto Collisions at sqrt(s_NN) = 200 GeV
• Prospects for Spin Physics at RHIC
• QCD Analysis of Polarized Deep Inelastic Data and Parton Distributions
• The Calculation of the Two-Loop Spin Splitting Functions $P_{ij}^{(1)}(x)$
• Next-to-leading order QCD corrections to high-p_T pion production in longitudinally polarized pp collisions
• A Rederivation of the Spin-dependent Next-to-leading Order Splitting Functions
• Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at sqrt(s) = 200 GeV
• The Spin Structure of the Nucleon
• Forward Neutral Pion Production in p+p and d+Au Collisions at sqrt(s_NN)=200 GeV
• The spin-dependent two-loop splitting functions
• Measurement of direct photon production in p + p collisions at sqrt(s) = 200 GeV
• Measurement of the Spin Asymmetry in the Photoproduction of Pairs of High-pT Hadrons at HERMES
• Gluon polarization in the nucleon from quasi-real photoproduction of high-pT hadron pairs
• The Spin Structure of the Nucleon in the Asymptotic Limit
• Study of the Fundamental Structure of Matter with an Electron-Ion Collider
• Determination of polarized parton distribution functions and their uncertainties
• Single-Inclusive Jet Production in Polarized pp Collisions at O(alpha_s^3)
• Sea quark and gluon polarization in the nucleon at NLO accuracy
• A critique of the angular momentum sum rules and a new angular momentum sum rule
• Large-p_T Inclusive pi^0 Cross Sections and Next-to-Leading-Order QCD Predictions
• Towards a global analysis of polarized parton distributions
• Threshold Resummation for the Inclusive-Hadron Cross-Section in pp Collisions
• Gluon Spin in the Nucleon
• Determination of polarized parton distribution functions with recent data on polarization asymmetries
• Next-to-leading order QCD corrections to one hadron-production in polarized pp collisions at RHIC
• Spin asymmetry A_1^d and the spin-dependent structure function g_1^d of the deuteron at low values of x and Q^2
• Hard Scattering in QCD with Polarized Beams
• Double Helicity Asymmetry in Inclusive Mid-Rapidity neutral pion Production for Polarized p+p Collisions at sqrt(s)=200 GeV
• Inclusive and Semi-Inclusive Polarized DIS Data Revisited
• Next-to-leading order jet cross sections in polarized hadronic collisions
• Do we understand the single-spin asymmetry for $p{i}^0$ inclusive production in pp collisions?
• Implications of Color Gauge Symmetry For Nucleon Spin Structure
• Next-to-Leading Order QCD Corrections to the Polarized Hadroproduction of Heavy Flavors
• Improved Measurement of Double Helicity Asymmetry in Inclusive Midrapidity pi^0 Production for Polarized p+p Collisions at sqrt(s)=200 GeV
• Threshold resummation for the prompt-photon cross section revisited
• Isolated-photon production in polarized pp collisions
• QCD Hard Scattering and the Sign of the Spin Asymmetry A_LL^pi
• Gluon Spin in a Quark Model
• Direct photon production in polarized hadron collisions at collider and fixed target energies
• Future of low-x forward physics at RHIC
• Polarized Gluon Distribution Delta g(x) in the Proton
• The Gluon Spin in the Chiral Bag Model
• Measurements of Delta G/G
• Constraints on gluon polarization in the nucleon at NLO accuracy

Cited by in corpus (11)

• Extraction of Spin-Dependent Parton Densities and Their Uncertainties
• Spin and orbital angular momentum in gauge theories: Nucleon spin structure and multipole radiation revisited
• Reply to the Comment on "Spin and orbital angular momentum in gauge theories: Nucleon spin structure and multipole radiation revisited" [PRL 100:232002 (2008)]
• Spin and orbital angular momentum in gauge theories (II): QCD and nucleon spin structure
• Inclusive cross section and double helicity asymmetry for pi^0 production in p+p collisions at sqrt(s) = 62.4 GeV
• Single-Inclusive Hadron Production in Polarized pp Scattering at Next-to-Leading Logarithmic Accuracy
• On the small-$x$ behavior of the orbital angular momentum distributions in QCD
• The Spin Budget of the Proton at NNLO and Beyond
• Chiral Mechanisms Leading to Orbital Quantum Structures in the Nucleon
• Next-to-Leading Order QCD Corrections to Heavy Quark Correlations in Longitudinally Polarized Hadron-Hadron Collisions
• Intrinsic parton motion soft mechanisms and the longitudinal spin asymmetry A_LL in high energy pp -> pi X