Extraction of the Sivers function from SIDIS, Drell-Yan, and W±/Z boson production data with TMD evolution

被引：40
作者：
Bury, Marcin [1 ]
Prokudin, Alexei [2 ,3 ]
Vladimirov, Alexey [1 ]
机构：
[1] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany
[2] Penn State Berks, Div Sci, Reading, PA 19610 USA
[3] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2021年 / 2021卷 / 05期
基金：
美国国家科学基金会;
关键词：
Deep Inelastic Scattering (Phenomenology); NLO Computations; TRANSVERSE-SPIN ASYMMETRIES; FINAL-STATE INTERACTIONS; SINGLE-SPIN; HARD-SCATTERING; MOMENTUM; DISTRIBUTIONS; POLARIZATION; DIS;
D O I：
10.1007/JHEP05(2021)151
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We perform a global fit of the available polarized Semi-Inclusive Deep Inelastic Scattering (SIDIS), polarized pion-induced Drell-Yan (DY) and W-+/-/Z boson production data at (NLO)-L-3 and NNLO accuracy of the Transverse Momentum Dependent (TMD) evolution, and extract the Sivers function for u, d, s and for sea quarks. The Qiu-Sterman function is determined in a model independent way via the operator product expansion from the extracted Sivers function. The analysis is supplemented by additional studies, such as the estimation of applicability region, the impact of the unpolarized distributions' uncertainties, the universality of the Sivers functions, positivity constraints, the significance of the sign-change relation, and the comparison with the existing extractions.
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页数：48
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