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arXiv 0908.4149hep-ph
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LHC上高吉诺对产生的横向动量再确认

Transverse-momentum resummation for gaugino-pair production at the LHC

Jonathan Debove

摘要:

我们提出了第一个精度分析的横向动量谱的高吉诺对产生的LHC的质心能量为10或14 TeV。我们的计算是基于一个普遍的再确认形式主义在次领先的对数精度,这是一致匹配的微扰预测在O(alpha_s)。本文给出了约束最小超对称标准模型中典型基准点中性伴子和电荷伴子的“镀金”产生的数值结果。我们发现,匹配remation结果有很大的不同,从传统的实验分析中采用的Monte Carlo预测。我们还详细研究了来自尺度和部分子密度函数变化和非微扰效应的理论不确定性。

英文摘要:

We present a first precision analysis of the transverse-momentum spectrum of gaugino pairs produced at the LHC with center-of-mass energies of 10 or 14 TeV. Our calculation is based on a universal resummation formalism at next-to-leading logarithmic accuracy, which is consistently matched to the perturbative prediction at O(alpha_s). Numerical results are given for the ``gold-plated'' associated production of neutralinos and charginos for a typical benchmark point in the constrained Minimal Supersymmetric Standard Model. We show that the matched resummation results differ considerably from the Monte Carlo predictions employed traditionally in experimental analyses. We also investigate in detail the theoretical uncertainties coming from scale and parton-density function variations and non-perturbative effects.

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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