Higgs mixing in the NMSSM and light Higgsinos
Higgs mixing in the NMSSM and light Higgsinos
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DOI：
10.1007/jhep11(2014)148
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发表时间：
2014-07
影响因子：
5.4
通讯作者：
K. Jeong;Y. Shoji;M. Yamaguchi
中科院分区：
文献类型：
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作者：
K. Jeong;Y. Shoji;M. Yamaguchi
我们探讨希格斯混合在一般的次最小超对称标准模型（NMSSM）的影响。扩展到包括规范单态，希格斯扇区可以自然地解释观察到的希格斯玻色子质量在TeV尺度的超对称性，而无需调用大停止混合。当单重态标量很轻时，情况尤其如此，因此单重态-二重态混合会增加类SM希格斯玻色子的质量。在这种情况下，希格斯混合有有趣的影响以下的事实，希格斯玻色子的质量参数和单重态耦合到希格斯双线性至关重要地依赖于希格斯玻色子的质量和混合角。对于与当前LHC关于希格斯信号速率的数据兼容的混合，希格斯玻色子需要相对较轻，大约或低于几百GeV，只要重的二重态希格斯玻色子的质量小于约GeV，并且单态类希格斯玻色子符合LEP约束。此外，希格斯粒子与光子的耦合可以从带电希格斯环和单重态-二重态混合中得到相当大的贡献。
We explore the effects of Higgs mixing in the general next-to-minimal supersymmetric Standard Model (NMSSM). Extended to include a gauge singlet, the Higgs sector can naturally explain the observed Higgs boson mass in TeV scale supersymmetry without invoking large stop mixing. This is particularly the case when the singlet scalar is light so that singlet-doublet mixing increases the mass of the SM-like Higgs boson. In such a case the Higgs mixing has interesting implications following from the fact that the higgsino mass parameter and the singlet coupling to Higgs bilinear crucially depend on the Higgs boson masses and mixing angles. For the mixing compatible with the current LHC data on the Higgs signal rates, the higgsinos are required to be relatively light, around or below a few hundred GeV, as long as the heavy doublet Higgs boson has a mass smaller than aboutGeV and the singlet-like Higgs boson is consistent with the LEP constraint. In addition, the Higgs coupling to photons can receive a sizable contribution of either sign from the charged-higgsino loops combined with singlet-doublet mixing.