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arXiv 1105.4587hep-phhep-ex
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在大型强子对撞机上作为希格斯冒充者的单重标量

Singlet scalars as Higgs imposters at the Large Hadron Collider

Ian Low, Joseph Lykken, Gabe Shaughnessy

摘要:

一个电弱单重标量可以通过环诱导的五维算符耦合到一对矢量玻色子。与标准模型希格斯玻色子相比,双光子和Z伽马通道中的单重态衰变宽度普遍增强,而衰变到大质量终态(如WW和ZZ)在运动学上是不利的。伽马伽马和Z伽马的总体事件发生率可能超过标准模型预期的数量级。这样的单重态可以表现为伽马伽马和Z伽马通道中的共振信号,即使质量高于WW运动学阈值。

英文摘要:

An electroweak singlet scalar can couple to pairs of vector bosons through loop-induced dimension five operators. Compared to a Standard Model Higgs boson, the singlet decay widths in the diphotons and Z gamma channels are generically enhanced, while decays into massive final states like WW and ZZ are kinematically disfavored. The overall event rates into gamma gamma and Z gamma can exceed the Standard Model expectations by orders of magnitude. Such a singlet may appear as a resonant signal in the gamma gamma and Z gamma channels, even with a mass above the WW kinematic threshold.

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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