N3LL上非极化夸克tmd的全局提取

Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022) Pub Date : 2022-12-16 DOI:10.22323/1.414.0800

G. Bozzi, A. Bacchetta, V. Bertone, C. Bissolotti, M. Cerutti, Fulvio Piacenza, M. Radici, A. Signori

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引用次数: 0

摘要

本文从全球半包容深度非弹性散射(SIDIS)和drel - yan数据集中提取了最新的非极化横动量相关(TMD)部分分布函数(pdf)和TMD碎片函数(FFs)。在q - T -对数的恢复中，拟合是在(next-to-) 3领先对数精度处进行的，并且具有灵活的非摄动函数，可以与实验数据达到非常好的一致性。特别地，我们解决了低能量SIDIS数据与理论预测之间的紧张关系，并探讨了精确的LHC数据对拟合结果的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Global extraction of unpolarized quark TMDs at N3LL

We present the most recent extraction of unpolarized transverse-momentum-dependent (TMD) parton distribution functions (PDFs) and TMD fragmentation functions (FFs) from global data sets of Semi-Inclusive Deep-Inelastic Scattering (SIDIS) and Drell-Yan. The ﬁt is performed at the (next-to-) 3 leading logarithmic accuracy in the resummation of q T -logarithms and features ﬂexible non-perturbative functions, which allow to reach a very good agreement with the experimental data. In particular, we address the tension between the low-energy SIDIS data and the theory predictions, and explore the impact of the precise LHC data on the ﬁt results.

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Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)

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