论文标题
部分可观测时空混沌系统的无模型预测
Measurements of the W boson rapidity, helicity, double-differential cross sections, and charge asymmetry in pp collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
在$ \ sqrt {s} = $ 13 TEV的包含w玻色子产生的差分横截面和电荷不对称性是针对两个横向极化状态测量的$ 13 TEV，这是W Boson绝对速度的函数。该测量方法使用了W玻色子腐烂到中微子的事件，以及muon或电子。与CMS检测器一起在LHC上记录的质子 - 蛋白质碰撞的数据样本对应于35.9 fb $^{ - 1} $的集成发光度。差分横截面及其值归一化为总包含W玻色子生产横截面的速度范围$ | y_ \ mathrm {w} | $ $ $ \ lt $ 2.5。除了总基质横截面外，W玻色子双分横截面，D $^2σ$/d $ p^\ ell_ \ Mathrm {t} $ d $ | | $和电荷不对称性作为电荷Lepton横向动量和pseudorapity的功能测量。这些测量值的精度用于使用近代领先顺序NNPDF3.0设置来约束质子的Parton分布功能。
The differential cross section and charge asymmetry for inclusive W boson production at $\sqrt{s} =$ 13 TeV is measured for the two transverse polarization states as a function of the W boson absolute rapidity. The measurement uses events in which a W boson decays to a neutrino and either a muon or an electron. The data sample of proton-proton collisions recorded with the CMS detector at the LHC in 2016 corresponds to an integrated luminosity of 35.9 fb$^{-1}$. The differential cross section and its value normalized to the total inclusive W boson production cross section are measured over the rapidity range $|y_\mathrm{W}|$ $\lt$ 2.5. In addition to the total fiducial cross section, the W boson double-differential cross section, d$^2σ$/d$p^\ell_\mathrm{T}$d$|η|$ and the charge asymmetry are measured as functions of the charged lepton transverse momentum and pseudorapidity. The precision of these measurements is used to constrain the parton distribution functions of the proton using the next-to-leading order NNPDF3.0 set.
