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arXiv 0705.3101hep-ph
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在LHC相关tW产生的完整单循环描述和可能的真正超对称效应的估计

A complete one-loop description of associated tW production at LHC and an estimate of possible genuine supersymmetric effects

M. Beccaria, C. M. Carloni Calame, G. Macorini, G. Montagna, F. Piccinini, F. M. Renard, C. Verzegnassi

摘要:

在MSSM框架下,我们计算了部分子过程$bg\to tW$引发的过程$pp \to t W+X$的单圈电弱效应和总QED辐射效应之和。结合这些条款与现有的非线性光学计算SM和超对称QCD修正,我们分析了整体的单圈超对称效应的过程中,通过积分微分截面的最终变量不变质量的部分速率。我们的结论是,对于某些选择的超对称性参数和相对较小的最终不变质量,他们可以达到相对百分之十的水平,可能相关的专门实验工作在大型强子对撞机。

英文摘要:

We compute, in the MSSM framework, the sum of the one-loop electroweak and of the total QED radiation effects for the process $pp \to t W+X$, initiated by the parton process $bg\to tW$. Combining these terms with the existing NLO calculations of SM and SUSY QCD corrections, we analyze the overall one-loop supersymmetric effects on the partial rates of the process, obtained by integrating the differential cross section up to a final variable invariant mass. We conclude that, for some choices of the SUSY parameters and for relatively small final invariant masses, they could reach the relative ten percent level, possibly relevant for a dedicated experimental effort at LHC.

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