The Role of Strange and Charm Quarks in the Nucleon Spin Structure Function

Abstract

We perform an analysis of the relation between the factorization scale and the masses of the quarks in the calculation of the hard gluon coefficient in polarized deep inelastic scattering. Particular attention is paid to the role of strange and charm quarks at finite momentum transfer. It is found that for the momentum transfer of the present experiments, the contribution from the charm quark is significant.

23 pages, 7 uuencoded figures, accepted for publication in Phys. Rev. D

References in corpus (7)

• The theory and phenomenology of polarized deep inelastic scattering
• Measurement of the Spin-Dependent Structure Function $g_1(x)$ of the Proton
• QCD Constrains on the Shape of Polarized Quark and Gluon Distributions
• Consistent Analysis of the Spin Content of the Nucleon
• Spin-dependent Parton Distributions from Polarized Structure Function Data
• Mesonic Corrections to the Shape of Quark Distributions
• The trace anomaly and the parton model

Cited by in corpus (7)

• Spin Structure of the Proton from Polarized Inclusive Deep-Inelastic Muon-Proton Scattering
• Ground-gamma band mixing and evolution of collectivity in even-even neutron-rich nuclei with 40<Z<50
• Gluon Virtuality and Heavy Sea Quark Contributions to the Spin-Dependent g_1 Structure Function
• Transverse Momentum in Semi-Inclusive Polarized Deep Inelastic Scattering and the Spin-Flavor Structure of the Proton
• Polarization Asymmetry Zero in Heavy Quark Photoproduction and Leptoproduction Cross Sections
• Heavy Quarks in Polarized Structure Functions
• Scheme Independence of $g_1^p(x,Q^2)$