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arXiv 0706.1964hep-phhep-ex
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在LHC上测试辐射中微子质量产生

Testing Radiative Neutrino Mass Generation at the LHC

Chian-Shu Chen, C. Q. Geng, J. N. Ng, J. M. S. Wu

摘要:

我们详细研究了一个比标准模型(SM)多一个SU(2)单重态和三重态标量场的模型。这使得马约拉纳中微子质量的辐射产生在两个回路的帮助下,从扩展的希格斯扇区产生的双电荷希格斯玻色子玻色子。我们详细研究了模型中希格斯和中微子扇区的现象学。给出了标量玻色子和赝标量玻色子及其混合质量的解析形式,以及活动中微子质量矩阵的结构。结果发现,该模型只容纳正常的中微子质量层次,并有一个大的参数空间,双电荷希格斯粒子可以在LHC观察到,从而使它在LHC可检验。此外,无中微子双β($\nonu$)衰变主要是由涉及双电荷希格斯粒子的交换过程引起的,因此如果观测到$\nonu$衰变,就不会弄错希格斯粒子的存在。分析了双电荷希格斯粒子的产生和衰变过程,讨论了不同的信号。

英文摘要:

We have investigated in detail a model that contains an additional SU(2) singlet and triplet scalar fields than the Standard Model (SM). This allows the radiative generation of Majorana neutrino masses at two-loop order with the help of doubly charged Higgs bosons that arise from the extended Higgs sector. We studied in detail the phenomenology of the Higgs and neutrino sectors of the model. We give the analytical form of the masses of scalar and pseudoscalar bosons and their mixings, and the structure of the active neutrino mass matrix. It is found that the model accommodates only normal neutrino mass hierarchy, and that there is a large parameter space where the doubly charged Higgs can be observed at the LHC, thereby making it testable at the LHC. Furthermore, the neutrino-less double beta ($\nonu$) decays arise predominantly from exchange processes involving the doubly charged Higgs, whose existence is thus unmistakable if $\nonu$ decays are observed. The production and decays of the doubly charged Higgs are analyzed, and distinct and distinguishing signals are discussed.

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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