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arXiv 1502.05233hep-ex
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在CMS测量$\sqrt{s} = 7$ TeV产生包含$pp \rightarrow W + X$的μ子电荷不对称性和改进的轻部分子分布函数测定

Measurement of the muon charge asymmetry in inclusive $pp \rightarrow W + X$ production at $\sqrt{s} = 7$ TeV at CMS and an improved determination of light parton distribution functions

Saranya Ghosh

摘要:

测量的μ子电荷不对称性的包容性$pp \rightarrow WX$生产在$\sqrt{s}=7$ TeV。数据样本对应于在LHC上用CMS探测器记录的4.7 $\mathrm{fb^{-1}}$的积分光度。由于样本超过两千万个$W \rightarrow μν$事件,与以前的测量相比,统计精度大大提高。这些新的结果提供了额外的限制质子的部分子分布函数的范围内的Bjorken标度变量$x$从$10^{-3}$ $10^{-1}$。这些测量一起使用的横截面包含深非弹性ep散射在HERA在次至领先阶QCD分析。

英文摘要:

Measurements of the muon charge asymmetry in inclusive $pp \rightarrow WX$ production at $\sqrt{s}=7$ TeV are presented. The data sample corresponds to an integrated luminosity of 4.7 $\mathrm{fb^{-1}}$ recorded with the CMS detector at the LHC. With a sample of more than twenty million $W \rightarrow μν$ events, the statistical precision is greatly improved in comparison to previous measurements. These new results provide additional constraints on the parton distribution functions of the proton in the range of the Bjorken scaling variable $x$ from $10^{-3}$ to $10^{-1}$. These measurements are used together with the cross sections for inclusive deep inelastic ep scattering at HERA in a next-to-leading-order QCD analysis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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