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arXiv 1004.3404hep-ph
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在LHC产生W +喷流的电荷不对称性

Charge asymmetry in W + jets production at the LHC

C. H. Kom, W. J. Stirling

摘要:

在LHC的W +喷流生产的电荷不对称性可以用来校准新物理贡献的存在。本文研究了n <= 4时标准模型中的σ(W^+ + n喷注)/σ(W^- + n喷注),特别注意高阶微扰修正和部分子分布函数的不确定性对预测的影响。我们发现,这些不确定性一般是为了百分之几,使实验测量的电荷不对称比新物理学的贡献特别有用的诊断工具。

英文摘要:

The charge asymmetry in W + jets production at the LHC can serve to calibrate the presence of New Physics contributions. We study the ratio σ(W^+ + n jets)/σ(W^- + n jets) in the Standard Model for n <= 4, paying particular attention to the uncertainty in the prediction from higher-order perturbative corrections and uncertainties in parton distribution functions. We show that these uncertainties are generally of order a few percent, making the experimental measurement of the charge asymmetry ratio a particularly useful diagnostic tool for New Physics contributions.

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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