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arXiv 1306.2342hep-phhep-ex
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在LHC上探测左右跷跷板模型中的重轻中微子混合

Probing Heavy-Light Neutrino Mixing in Left-Right Seesaw Models at the LHC

Chien-Yi Chen, P. S. Bhupal Dev, R. N. Mohapatra

摘要:

我们发现在TeV尺度左右对称的跷跷板模型中,由轻重中微子混合产生的重Majorana中微子对对撞机信号有新的主导贡献,它直接探测了某类模型中的跷跷板矩阵.我们提出了一种方法来区分这种贡献,从广泛讨论的一个,只探测重右手中微子的马约拉纳性质,通过分析一些简单的运动学变量。我们发现,在这类L-R跷跷板模型中,现有的LHC数据已经产生了比标准跷跷板模型更强的重轻中微子混合约束,随着更多数据的收集,改进将是显着的。

英文摘要:

We show that in TeV-scale left-right (L-R) symmetric seesaw models, there are new dominant contributions to the collider signals of heavy Majorana neutrinos arising from the heavy-light neutrino mixing, which directly probe the seesaw matrix in a certain class of models. We propose a way to distinguish this contribution from the widely discussed one that only probes the Majorana nature of the heavy right-handed neutrinos, by analyzing some simple kinematical variables. We find that in this class of L-R seesaw models the existing LHC data already yield slightly stronger constraints on the heavy-light neutrino mixing than those derived for standard seesaw models, and the improvement will be significant as more data are collected.

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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