Target mass corrections for spin-dependent structure functions in collinear factorization
Target mass corrections for spin-dependent structure functions in collinear factorization
复制标题
共线分解中自旋相关结构函数的目标质量校正
DOI：
10.1016/j.physletb.2008.10.036
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发表时间：
2008
影响因子：
4.4
通讯作者：
W. Melnitchouk
中科院分区：
文献类型：
--
作者：
A. Accardi;W. Melnitchouk
本文利用共线因式分解得到了自旋相关核子结构函数g1和极化不对称性A1的靶质量修正。的TMC被发现是显着的g1在大xB，即使在相对较高的Q2值，但在A1很大程度上取消。从共线因式分解和从运营商的产品扩展得到的TMCs的比较表明，在低Q2的校正驱动质子A1在相反的方向。
We derive target mass corrections (TMC) for the spin-dependent nucleon structure function g1and polarization asymmetry A1in collinear factorization at leading twist. The TMCs are found to be significant for g1at large xB, even at relatively high Q2values, but largely cancel in A1. A comparison of TMCs obtained from collinear factorization and from the operator product expansion shows that at low Q2the corrections drive the proton A1in opposite directions.