Vector boson production in association with a jet at forward rapidities

被引：14
作者：
Gehrmann-De Ridder, A. [1 ,2 ]
Gehrmann, T. [2 ]
Glover, E. W. N. [3 ]
Huss, A. [4 ]
Walker, D. M. [3 ]
机构：
[1] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland
[2] Univ Zurich, Dept Phys, CH-8057 Zurich, Switzerland
[3] Univ Durham, Inst Particle Phys Phenomenol, Durham DH1 3LE, England
[4] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland
来源：
EUROPEAN PHYSICAL JOURNAL C | 2019年 / 79卷 / 06期
基金：
瑞士国家科学基金会; 英国科学技术设施理事会;
关键词：
ONE-LOOP AMPLITUDES; CROSS-SECTIONS; COLLISIONS; E(+)E(-);
D O I：
10.1140/epjc/s10052-019-7010-2
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：
Final states with a vector boson and a hadronic jet allow one to infer the Born-level kinematics of the underlying hard scattering process, thereby probing the partonic structure of the colliding protons. At forward rapidities, the parton collisions are highly asymmetric and resolve the parton distributions at very large or very small momentum fractions, where they are less well constrained by other processes. Using theory predictions accurate to next-to-next-to-leading order (NNLO) in QCD for both W +/- and Z production in association with a jet at large rapidities at the LHC, we perform a detailed phenomenological analysis of recent LHC measurements. The increased theory precision allows us to clearly identify specific kinematical regions where the description of the data is insufficient. By constructing ratios and asymmetries of these cross sections, we aim to identify possible origins of the deviations, and highlight the potential impact of the data on improved determinations of parton distributions.
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收藏
页数：13
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