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arXiv 1106.1682hep-phhep-ex
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一个Higgsophilic s-通道Z'和CDF W+2 J反常

A Higgsophilic s-channel Z' and the CDF W+2J Anomaly

JiJi Fan, David Krohn, Paul Langacker, Itay Yavin

摘要:

CDF合作最近提出了来自W+2 j独家样本中事件的dijet不变质量分布过量的证据。在这里,我们证明了这种过剩可以用弱耦合的亲希格斯玻色子Z'在M_Z' ~ 270 GeV附近的s沟道产生来解释,Z '在M_{H^\pm} ~ 150 GeV衰变为W^ \pm和带电的Higgs。虽然一般疏轻子Z'模型的最简单实现很快就会遇到电弱可观测量的紧张局势,但更具体的Higgsophilic模型可以避免这些约束,而无需进行任何微调。我们讨论了这个模型的显着特点,专注于其特定的签名在Tevatron。

英文摘要:

The CDF collaboration recently presented evidence for an excess in the dijet invariant mass distribution coming from events in a W+2j exclusive sample. Here we show that this excess can be explained by the s-channel production of a weakly coupled Higgsophilic Z' near M_Z' ~ 270 GeV which decays into a W^\pm and a charged Higgs at M_{H^\pm} ~ 150 GeV. While the simplest implementations of a general leptophobic Z' model quickly run into tensions with electroweak observables, a more specific Higgsophilic model evades these constraints without resorting to any fine-tuning. We discuss the distinctive features of this model, focusing on its particular signatures at the Tevatron.

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