Quark-hadron duality in neutron (3He) spin structure

Phys Rev Lett. 2008 Oct 31;101(18):182502. doi: 10.1103/PhysRevLett.101.182502. Epub 2008 Oct 30.


We present experimental results of the first high-precision test of quark-hadron duality in the spin-structure function g_{1} of the neutron and 3He using a polarized 3He target in the four-momentum-transfer-squared range from 0.7 to 4.0 (GeV/c);{2}. Global duality is observed for the spin-structure function g_{1} down to at least Q;{2}=1.8 (GeV/c);{2} in both targets. We have also formed the photon-nucleon asymmetry A1 in the resonance region for 3He and found no strong Q2 dependence above 2.2 (GeV/c);{2}.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.