Polarised structure functions in the parton model
Polarised structure functions in the parton model
复制标题
Parton 模型中的极化结构函数
DOI：
10.1016/0370-2693(89)90306-7
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发表时间：
1989
影响因子：
4.4
通讯作者：
R. G. Roberts
中科院分区：
文献类型：
--
作者：
J. Jackson;G. Ross;R. G. Roberts
结果表明，为了一致地预测核子自旋结构函数，部分子模型的协变形式是必要的。导出了g2与g1的求和规则，并讨论了它们的适用范围。通过对g1的测量，S给出了作为x屈服值函数的平均kTa的直接估计，这与实验和我们从非极化结构函数的部分子模型的协变公式中得到的独立估计一致。在K2≅0占优势的假设下，可以从数据中提取极化和非极化协变部分子分布本身作为p·k的函数，给出了协变相对论部分子模型的完整描述。
It is shown that a covariant form of the parton model is necessary for consistent predictions of the nucleon spin structure functions. Sum rules relating g2to g1are derived and the limits of their applicability discussed. The measurement of g1is s hown to give a direct estimate of the mean kTas a function of x yielding values consistent with experiment and with an independent estimate we derive from a covariant formulation of the parton model for the unpolarised structure functions. With the assumption of dominance of k2≅0, it is shown that the polarised and unpolarised covariant parton distributions themselves as functions of p·k can be extracted from the data, giving a complete specification of the covariant relativistic parton model.