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arXiv 1609.09027hep-ph
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LHC和FCC物理学中精确QCD的硬修正:一种新方法

Hard Corrections in Precision QCD for LHC and FCC Physics: A New Approach

B. F. L. Ward

摘要:

着眼于通常的非物理发散的硬固定阶修正的预测中探测的过程中的高能碰撞强子束装置作为一个接近软限制,我们提出了一种新的方法来实现这种修正,在LHC和未来的FCC设备的一些重点。我们表明,在我们的方法中,相应的分歧被删除。这意味着我们将使标准结果更接近观察到的排他性分布。虽然我们强调,该方法具有普遍适用性,我们使用的单Z和虚拟伽马的生产和衰变轻子对作为我们的原型例子。因此,我们的工作开辟了另一条道路,以严格的基线,为LHC物理学的理论精度标签的确定,与随之而来的推广到未来的FCC。

英文摘要:

With an eye toward the usual unphysical divergence of hard fixed-order corrections in predictions for the processes probed in high energy colliding hadron beam devices as one approaches the soft limit, we present a new approach to the realization of such corrections, with some emphasis on the LHC and the future FCC devices. We show that the respective divergence is removed in our approach. This means that we would render the standard results to be closer to the observed exclusive distributions. While we stress that the approach has general applicability, we use the single Z and virtual gamma production and decay to lepton pairs as our prototypical example. Accordingly, our work opens another part of the way to rigorous baselines for the determination of the theoretical precision tags for LHC physics, with an attendant generalization to the future FCC.

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