Higgs phenomenology as a probe of sterile neutrinos
Higgs phenomenology as a probe of sterile neutrinos
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DOI：
10.1103/physrevd.100.115019
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发表时间：
2019-09
影响因子：
5
通讯作者：
J. Butterworth;M. Chala;C. Englert;M. Spannowsky;A. Titov
中科院分区：
文献类型：
--
作者：
J. Butterworth;M. Chala;C. Englert;M. Spannowsky;A. Titov
超越标准模型的物理学可以表现为新的轻态和重自由度。在本文中，我们假设前者只包括一个不育中微子，$N$。因此，对新物理学最不可知的描述是建立在标准模型场和N$之上的有效场论。我们表明，希格斯现象学提供了一个敏感的和潜在的关键工具，以限制有效的规范相互作用的不育中微子，目前的实验尚未探测。与此同时，这激发了一系列新的希格斯衰变通道，这些通道具有干净的签名，作为下一次LHC运行的候选者，包括$h\to \gamma\gamma +p_T^\text{miss}$和$h\to \gamma\gamma+p_T^\text{miss}$。
Physics beyond the Standard Model can manifest itself as both new light states and heavy degrees of freedom. In this paper, we assume that the former comprise only a sterile neutrino, $N$. Therefore, the most agnostic description of the new physics is given by an effective field theory built upon the Standard Model fields as well as $N$. We show that Higgs phenomenology provides a sensitive and potentially crucial tool to constrain effective gauge interactions of sterile neutrinos, not yet probed by current experiments. In parallel, this motivates a range of new Higgs decay channels with clean signatures as candidates for the next LHC runs, including $h\to \gamma+p_T^\text{miss}$ and $h\to \gamma\gamma+p_T^\text{miss}$.