arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2006.10480hep-ph
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一个最优的色单态观测量

An Optimal Observable for Color Singlet Identification

Andy Buckley, Giuseppe Callea, Andrew J. Larkoski, Simone Marzani

摘要:

我们提出了一种新的方法来构建一个颜色标签,即一个观察,是能够区分的两个射流从一个不同的颜色配置的双射流背景的颜色单衰减成两个射流。我们通过明确地取软极限中相应的前导阶矩阵元素的比率来做到这一点,从而获得在我们的近似中可证明是最佳的可观察量。我们称之为“喷色环”,我们比较其性能与其他颜色敏感的观测,如喷拉力和偶极。我们还评估了喷色环的性能,通过将其应用到强子衰变的情况下,一个助推希格斯玻色子玻色子和电弱玻色子的模拟。

英文摘要:

We present a novel approach to construct a color tagger, i.e. an observable that is able to discriminate the decay of a color-singlet into two jets from a two-jet background in a different color configuration. We do this by explicitly taking the ratio of the corresponding leading-order matrix elements in the soft limit, thus obtaining an observable that is provably optimal within our approximation. We call this observable the "jet color ring" and we compare its performance to other color-sensitive observables such as jet pull and dipolarity. We also assess the performance of the jet color ring in simulations by applying it to the case of the hadronic decays of a boosted Higgs boson and of an electroweak boson.

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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