Quark-Hadron Duality in Spin Structure Functions g1p and g1d

Abstract

New measurements of the spin structure functions of the proton and deuteron g1p(x,Q2) and g1d(x,Q2) in the nucleon resonance region are compared with extrapolations of target-mass-corrected next-to-leading-order (NLO) QCD fits to higher energy data. Averaged over the entire resonance region (W<2 GeV), the data and QCD fits are in good agreement in both magnitude and Q2 dependence for Q2>1.7 GeV2. This global duality appears to result from cancellations among the prominent local resonance regions: in particular strong sigma{3/2} contributions in the Delta(1232) region appear to be compensated by strong sigma{1/2} contributions in the resonance region centered on 1.5 GeV. These results are encouraging for the extension of NLO QCD fits to lower W and Q2 than have been used previously.

15 pages, 3 figures

References in corpus (21)

• Models for the Polarized Parton Distributions of the Nucleon
• Measurements of the Proton and Deuteron Spin Structure Functions g1 and g2
• $Q^2$ Dependence of Quadrupole Strength in the ${\gamma }^{\ast }p\to {\Delta }^{+}(1232)\to p{\pi }^0$ Transition
• Electroproduction of the Delta Resonance at High Momentum Transfer
• Electromagnetic Meson Production in the Nucleon Resonance Region
• Quark-hadron duality in electron scattering
• Quark-Hadron Duality in Electron Scattering
• Implications of the discrepancy between proton form factor measurements
• Measurement of the $x$- and $Q^2$-Dependence of the Asymmetry $A_1$ on the Nucleon
• Target Mass Corrections for Polarized Structure Functions and New Sum Rules
• Determination of polarized parton distribution functions and their uncertainties
• Measurement of the N to Delta(1232) Transition at High Momentum Transfer by pi0 Electroproduction
• Measurement of the Proton Spin Structure Function $g_1(x,Q^2)$ for $Q^2$ from 0.15 to 1.6 GeV${}^2$ with CLAS
• The origins of quark-hadron duality: How does the square of the sum become the sum of the squares?
• Evidence for Quark-Hadron Duality in the Proton Spin Asymmetry $A_1$
• Symmetry breaking and quark-hadron duality in structure functions
• Measurement of Inclusive Spin Structure Functions of the Deuteron
• Perturbative Duality in the Resonance Spin Structure Functions
• Target mass corrections revisited
• Borel resummation of soft gluon radiation and higher twists
• Parton-Hadron Duality in Unpolarised and Polarised Structure Functions

Cited by in corpus (35)

• Adler Function, Bjorken Sum Rule, and the Crewther Relation to Order alpha_s^4 in a General Gauge Theory
• Spin Structure of the Nucleon - Status and Recent Results
• The Spin Structure of the Nucleon
• Experimental study of isovector spin sum rules
• Bjorken Sum Rule and pQCD frontier on the move
• Nucleon spin structure and pQCD frontier on the move
• Four-loop QCD analysis of the Bjorken sum rule vs data
• Determination of the Proton Spin Structure Functions for 0.05 < Q^2 < 5 GeV^2 using CLAS
• Moments of the Spin Structure Functions g_1^p and g_1^d for 0.05 < Q^2 < 3.0 GeV^2
• Precision measurements of $g_1$ of the proton and the deuteron with 6 GeV electrons
• Precise Determination of the Deuteron Spin Structure at Low to Moderate $Q^2$ with CLAS and Extraction of the Neutron Contribution
• Nucleon spin structure at low momentum transfers
• New method for extracting neutron structure functions from nuclear data
• Measurement of Parity-Violating Asymmetry in Electron-Deuteron Inelastic Scattering
• Measurement of the Parity-Violating Asymmetry in Electron-Deuteron Scattering in the Nucleon Resonance Region
• Target mass corrections for spin-dependent structure functions in collinear factorization
• Quark-Hadron Duality in Neutron (3He) Spin Structure
• 3He Spin-Dependent Cross Sections and Sum Rules
• First measurement of target and double spin asymmetries for polarized e- polarized p --> e p pi0 in the nucleon resonance region above the Delta(1232)
• Moments of Spin Structure Functions: Sum Rules and Polarizabilities
• Resonant contributions to inclusive nucleon structure functions from exclusive meson electroproduction data
• Deuteron spin structure functions in the resonance and DIS regions
• Confirmation of quark-hadron duality in the neutron F_2 structure function
• What does kinematical target mass sensitivity in DIS reveal about hadron structure?
• Direct observation of quark-hadron duality in the free neutron F_2 structure function
• Moments of the neutron $g_2$ structure function at intermediate $Q^2$
• Resonant contributions to polarized proton structure functions
• Ratios of 15N/12C and 4He/12C inclusive electroproduction cross sections in the nucleon resonance region
• Observation of quark-hadron duality in gamma*-p helicity cross sections
• Target and Beam-Target Spin Asymmetries in Exclusive ${\pi }^{+}$ and ${\pi }^{-}$ Electroproduction with 1.6 to 5.7 GeV Electrons
• Small-x behavior of non-singlet spin structure function and Bjorken sum rule with pQCD correction up to NNLO and Higher twist correction
• Detailed Study of Quark-Hadron Duality in Spin Structure Functions of the Proton and Neutron
• The Jlab Upgrade - Studies of the Nucleon with CLAS12
• Polarized proton structure in the resonance region
• Monte Carlo analysis of CLAS data