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Quark-hadron duality in neutron (3He) spin structure |
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| Authors: | Solvignon P Liyanage N Chen J-P Choi Seonho Aniol K Averett T Boeglin W Camsonne A Cates G D Chang C C Chudakov E Craver B Cusanno F Deur A Dutta D Ent R Feuerbach R Frullani S Gao H Garibaldi F Gilman R Glashausser C Gorbenko V Hansen O Higinbotham D W Ibrahim H Jiang X Jones M Kelleher A Kelly J Keppel C Kim W Korsch W Kramer K Kumbartzki G Lerose J J Lindgren R Ma B Margaziotis D J Markowitz P McCormick K Meziani Z-E Michaels R Moffit B Monaghan P Munoz Camacho C Paschke K Reitz B Saha A Sheyor R Singh J Slifer K Sulkosky V Tobias A Urciuoli G M Wang K Wijesooriya K Wojtsekhowski B Woo S |
| Institution: | Argonne National Laboratory, Argonne, Illinois 60439, USA. |
| Abstract: | 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}. |
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