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arXiv 0811.2368hep-ph
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用模型计算研究Sivers函数

Studying the Sivers function by model calculations

A. Courtoy, S. Scopetta, V. Vento

摘要:

本文给出了一种计算组分夸克模型中Sivers函数的形式。一个非相对论性的减少的计划进行,并施加到Isgur-Karl模型。我们得到的$u$和$d$风味贡献的符号是相反的。Burkardt Sum Rule在很大程度上得到了满足。在对模型动量尺度到实验动量尺度的QCD演化进行估计后,得到了与已有数据较为一致的结果。

英文摘要:

A formalism is presented to evaluate the Sivers function in constituent quark models. A non-relativistic reduction of the scheme is performed and applied to the Isgur-Karl model. The sign for the $u$ and $d$ flavor contributions that we obtained turns out to be opposite. The Burkardt Sum Rule is fulfilled to a large extent. After the estimate of the QCD evolution of the results from the momentum scale of the model to the experimental one, a reasonable agreement with the available data is obtained.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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