Effects of the neutrino B-term on the Higgs mass parameters and electroweak symmetry breaking
Effects of the neutrino B-term on the Higgs mass parameters and electroweak symmetry breaking
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DOI：
10.1088/1126-6708/2005/02/025
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发表时间：
2004-11
影响因子：
5.4
通讯作者：
Y. Farzan
中科院分区：
文献类型：
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作者：
Y. Farzan
为了在MSSM中嵌入跷跷板机制，两个或三个右手中微子超多重态Ni必须被添加到模型中。在这些新超场的存在下，软超对称破缺势包含轻子数破坏的质量项，称为中微子B项，MBνNN/2。本文研究了Bν对希格斯粒子质量参数的影响。利用电弱对称性破缺的条件，我们导出了Bν的一个上界，在一定的参数范围内，它比以前的界强两个数量级。我们还提出了一个简单的模型，其中Bν的值很大，而其余的超对称性破缺项在TeV尺度或更小。
To embed the seesaw mechanism in the MSSM, two or three right-handed neutrino supermultiplets, Ni, have to be added to the model. In the presence of these new superfields, the soft supersymmetry breaking potential includes a lepton number violating mass term which is known as the neutrino B-term, MBνNN/2. In this paper, we study the effects of Bν on the Higgs mass parameters. Using the condition for the electroweak symmetry breaking, we derive an upper bound on Bν which, for some range of parameters, is two orders of magnitude stronger than the previous bounds. We also propose a simple model in which it is natural to have large values of Bν while the rest of the supersymmetry breaking terms are at the TeV scale or smaller.