论文标题
关于从SIDIS数据提取价横向分布的关于
On the extraction of the valence transversity distributions from SIDIS data
论文作者
论文摘要
$ U $和$ d $ Quarks的横向分布通常是从半包含深度非弹性散射（SIDIS）中的旋转不对称数据（Sidis）中提取的：但是，由于其手性奇数，它必须与另一个手性奇数功能耦合，通常是collins或di-hadron fragmentation function。简要讨论了涉及旋转不对称比率和避免对Collins功能的比率的SIDIS数据的最新建议。提出了涉及横截面比率的新测量。他们将允许直接提取横向比率，$ h_1^{d_v}/h_1^{u_v} $。给出了数值估计。
The transversity distribution for $u$ and $d$ quarks is usually extracted from data on spin asymmetries in Semi Inclusive Deep Inelastic Scattering (SIDIS): however, due to its chiral odd nature, it has to be coupled to another chiral odd function, typically the Collins or the di-hadron fragmentation function. A recent suggestion of considering SIDIS data involving ratios of spin asymmetries and avoiding a knowledge of the Collins function, is briefly discussed. New measurements, involving ratios of cross sections, are suggested. They would allow a direct extraction of the transversity ratio, $h_1^{d_V}/h_1^{u_V}$. Numerical estimates are given.
