Strange quark parton distribution functions and implications for Drell-Yan boson production at the LHC
Strange quark parton distribution functions and implications for Drell-Yan boson production at the LHC
复制标题
奇夸克部分子分布函数及其对大型强子对撞机 Drell-Yan 玻色子产生的影响
DOI：
10.1103/physrevd.85.094028
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发表时间：
2012
影响因子：
5
通讯作者：
K. Park
中科院分区：
文献类型：
--
作者：
A. Kusina;T. Stavreva;S. Berge;F. Olness;I. Schienbein;K. Kovářík;T. Ježo;J. Yu;K. Park
部分子分布函数（PDF）的全局分析提供了对质子的上夸克和下夸克分量的深刻约束，但约束其他味自由度更具挑战性。高阶理论预测和新的数据集有助于最近的改进。尽管有这些努力，奇异夸克PDF仍有相当大的不确定性，特别是在小x区域。我们研究了实验和理论的限制，并调查这种不确定性对LHC观测值的影响。特别是，我们研究W/Z生产，看看s-夸克的不确定性如何传播到这些观测值，并检查在何种程度上在大型强子对撞机的精确测量可以提供额外的信息的质子味结构。
Global analyses of Parton Distribution Functions (PDFs) have provided incisive constraints on the up and down quark components of the proton, but constraining the other flavor degrees of freedom is more challenging. Higher-order theory predictions and new data sets have contributed to recent improvements. Despite these efforts, the strange quark PDF has a sizable uncertainty, particularly in the small x region. We examine the constraints from experiment and theory, and investigate the impact of this uncertainty on LHC observables. In particular, we study W/Z production to see how the s-quark uncertainty propagates to these observables, and examine the extent to which precise measurements at the LHC can provide additional information on the proton flavor structure.