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arXiv 1801.08129hep-phhep-ex
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隐形玻色子的碰撞

Running bumps from stealth bosons

J. A. Aguilar-Saavedra

摘要:

对于“隐形玻色子”$S$,光助推粒子与衰变$S \to A A \to q \bar q q \bar q$成四个夸克和重建为一个单一的脂肪喷流,修饰喷流质量有很强的相关性与修饰喷流子结构变量。因此,射流质量分布受到射流子结构选择切割的强烈影响,当应用于修饰射流时。我们说明了这一事实,重铸CMS搜索低质量dijet共振,并显示了一些有代表性的例子。质量分布在100 - 300 GeV范围内的几个位置呈现出窄和宽的隆起,在子粒子$A$和母粒子$S$的质量之间,取决于射流子结构的选择。在解释和比较非标准签名的实验结果时,这一惊人的观察结果提出了几个警告。单个加速粒子衰变强子产生多个碰撞的可能性,在完全不同的喷流质量,并取决于事件的选择,把异常追逐的游戏带到了一个新的水平。

英文摘要:

For the "stealth bosons" $S$, light boosted particles with a decay $S \to A A \to q \bar q q \bar q$ into four quarks and reconstructed as a single fat jet, the groomed jet mass has a strong correlation with groomed jet substructure variables. Consequently, the jet mass distribution is strongly affected by the jet substructure selection cuts when applied on the groomed jet. We illustrate this fact by recasting a CMS search for low-mass dijet resonances and show a few representative examples. The mass distributions exhibit narrow and wide bumps at several locations in the 100 - 300 GeV range, between the masses of the daughter particles $A$ and the parent particle $S$, depending on the jet substructure selection. This striking observation introduces several caveats when interpreting and comparing experimental results, for the case of non-standard signatures. The possibility that a single boosted particle decaying hadronically produces multiple bumps, at quite different jet masses, and depending on the event selection, brings the game of anomaly chasing to the next level.

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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