Quark-hadron duality in neutron (3He) spin structure.
Quark-hadron duality in neutron (3He) spin structure.
复制标题
中子（3He）自旋结构中的夸克-强子对偶性。
作者：
P. Solvignon;N. Liyanage;J. Chen;Seonho Choi;K. Aniol;T. Averett;W. Boeglin;A. Camsonne;G. Cates;C. Chang;E. Chudakov;B. Craver;F. Cusanno;A. Deur;D. Dutta;R. Ent;R. Feuerbach;S. Frullani;H. Gao;F. Garibaldi;R. Gilman;C. Glashausser;V. Gorbenko;O. Hansen;D. Higinbotham;H. Ibrahim;X. Jiang;M. Jones;A. Kelleher;J. Kelly;C. Keppel;W. Kim;W. Korsch;K. Kramer;G. Kumbartzki;J. Lerose;R. Lindgren;B. Ma;D. Margaziotis;P. Markowitz;K. Mccormick;Z. Meziani;R. Michaels;B. Moffit;P. Monaghan;C. Muñoz Camacho;K. Paschke;B. Reitz;A. Saha;R. Sheyor;J. Singh;K. Slifer;V. Sulkosky;A. Tobias;G. Urciuoli;K. Wang;K. Wijesooriya;B. Wojtsekhowski;S. Woo;J. Yang;X. Zheng;L. Zhu
本文首次在中子和3He的自旋结构函数g_{1}中高精度地测试了夸克-强子对偶性，使用了一个极化的3He靶，其动量转移平方范围为0.7 ~ 4.0 (GeV/c);{2}。自旋结构函数g_{1}最小为Q， {2}=1.8 (GeV/c)；两个目标都是{2}。我们还在3He的共振区形成了光子-核子不对称A1，并且发现在2.2 (GeV/c)；{2}以上没有很强的Q2依赖性。
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}.