Non-perturbative contributions to vector-boson transverse momentum spectra in hadronic collisions

被引：30

作者：

Hautmann, Francesco ^{[1
,2
,3
]}

Scimemi, Ignazio ^{[4
,5
]}

Vladimirov, Alexey ^{[6
]}

机构：

[1] Rutherford Appleton Lab, Chilton OX11 0QX, England

[2] Univ Oxford, Phys Dept, Oxford OX1 3NP, England

[3] Univ Antwerp, Elementaire Deeltjes Fys, B-2020 Antwerp, Belgium

[4] Univ Complutense Madrid UCM, Dept Fis Teor, Madrid 28040, Spain

[5] Univ Complutense Madrid UCM, IPARCOS, Madrid 28040, Spain

[6] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

来源：

PHYSICS LETTERS B | 2020年 / 806卷

基金：

欧盟地平线“2020”;

关键词：

CROSS-SECTION; W-BOSON; PAIRS; JETS; MASS;

D O I：

10.1016/j.physletb.2020.135478

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Experimental measurements of Drell-Yan (DY) vector-boson production are available from the Large Hadron Collider (LHC) and from lower-energy collider and fixed-target experiments. In the region of low vector-boson transverse momenta q(T), which is important for the extraction of the W-boson mass at the LHC, QCD contributions from non-perturbative Sudakov form factors and intrinsic transverse momentum distributions become relevant. We study the potential for determining such contributions from fits to LHC and lower-energy experimental data, using the framework of low-q(T) factorization for DY differential cross sections in terms of transverse momentum dependent (TMD) distribution functions. We investigate correlations between different sources of TMD non-perturbative effects, and correlations with collinear parton distributions. We stress the relevance of accurate DY measurements at low masses and with fine binning in transverse momentum for improved determinations of long-distance contributions to Sudakov evolution processes and TMDs. (C) 2020 The Author(s). Published by Elsevier B.V.

引用

页数：7

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