Quarks and Gluons in Nucleon Polarized Structure Functions
C. Bourrely, F. Buccella, O. Pisanti, P. Santorelli, J. Soffer
Abstract
We study the available data in polarized e-p deep inelastic scattering to test two different solutions to the so called spin crisis: one of them based on the axial gluon anomaly and consistent with the Bjorken sum rule and another one, where the defects in the spin sum rules and in the Gottfried sum rule are related. In this case a defect is also expected for the Bjorken sum rule. Experimental data, especially the very recent SLAC E154, favour the first solution and demand a gluon polarization ΔG = 2.25 1.39.
Create a lesson
Related papers
Has Quarkyonic Matter Been Seen in Lattice Simulations?
Kohei Fujikura, Kenji Fukushima, Yoshimasa Hidaka et al.
Analytic parametrisations of the scale dependence of proton parton distributions
David F. Rentería-Estrada
DIS-secting the universe with high-energy neutrinos
Rhorry Gauld, Lorenzo Guerra, Ulrich Haisch et al.
Quantum Fourier integration of decay rates at next-to-leading order
David F. Rentería-Estrada
Light Primordial Black Holes from a First-Order Phase Transition near the End of Inflation: Baryogenesis and Gravitational Wave Signatures
Zihong Cheng, Fa Peng Huang
Investigating bottom quark effects in Higgs boson pair production
David Bürg, Gudrun Heinrich, Philipp Rendler