arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1307.0146hep-ph
收藏

从开粲和W产生数据对极化部分子分布的约束

Constraints on polarized parton distributions from open charm and W production data

Emanuele Roberto Nocera

摘要:

我们研究了新的开放魅力muo生产数据从COMPASS和初步W生产数据从STAR对NNPDFpol1.0,第一个公正的极化部分子分布最近由NNPDF合作和包容性的深度非弹性散射数据的基础上交付的影响。包含在新的数据集中的信息被纳入我们的Monte Carlo部分子测定通过贝叶斯重新加权,一种基于统计推断的方法,避免了需要一个全球改装。我们明确地表明,在何种程度上COMPASS和STAR数据可以提高我们的知识胶子和反夸克极化部分子分布分别。

英文摘要:

We study the impact of new open charm muoproduction data from COMPASS and preliminary W production data from STAR on NNPDFpol1.0, the first unbiased set of polarized parton distributions recently delivered by the NNPDF Collaboration and based on inclusive Deep-Inelastic Scattering data only. The information contained in the new data sets is incorporated in our Monte Carlo parton determination via Bayesian reweighting, a method based on statistical inference which avoids the need for a global refitting. We explicitly show to which extent COMPASS and STAR data can improve our knowledge of gluon and antiquark polarized parton distributions respectively.

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。

↑