论文标题
与模型无关的方法，用于将干涉效应纳入对撞机的新共振
Model-independent approach for incorporating interference effects in collider searches for new resonances
论文作者
论文摘要
在大型强子对撞机上收集的数据中存在大质量共振，将为超出标准模型以外的物理学提供直接的证据。 LHC当前共振搜索中的一个关键挑战是信号 - 背景干扰效应的建模，与没有干扰的情况相比，它可能会严重扭曲重建的不变质量分布的形状。这种效果在很大程度上取决于超出标准模型理论，如果人们的目的是最大程度地减少搜索结果上的任何理论偏见，则必须被认为是未知的。在本文中，我们描述了一种采用物理动机，独立于模型的模板功能形式的过程，该模板功能形式可用于模拟干扰效应，既用于表征阳性发现的表征，又是在呈现无结果的情况下。我们用标量共振衰减成一对光子的示例说明了这种方法。
The presence of large-mass resonances in the data collected at the Large Hadron Collider would provide direct evidence of physics beyond the Standard Model. A key challenge in current resonance searches at the LHC is the modelling of signal--background interference effects, which can severely distort the shape of the reconstructed invariant mass distribution relative to the case where there is no interference. Such effects are strongly dependent on the beyond the Standard Model theory that must be considered as unknown if one aims to minimise any theoretical bias on the search results. In this paper, we describe a procedure which employs a physically-motivated, model-independent template functional form that can be used to model interference effects, both for the characterisation of positive discoveries, and in the presentation of null results. We illustrate the approach with the example of a scalar resonance decaying into a pair of photons.
