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Higgs boson mass in NMSSM with right-handed neutrino


In order to have massive neutrinos, the right-handed neutrino/sneutrino superfield (N) need to be introduced in supersymmetry. In the framework of NMSSM (the MSSM with a singlet S) such an extension will dynamically lead to a TeNT-scale Majorana mass for the right-handed neutrino through the S N N coupling when S develops a vev (the free Majorana mass term is forbidden by the assumed Z(3) symmetry). Also, through the couplings S N N and SHuHd the SM-like Higgs boson (a mixture of H-u, H-d and S) can naturally couple with the right-handed neutrino/sneutrino. As a result, the TeV-scale right-handed neutrino/sneutrino may significantly contribute to the Higgs boson mass. Through an explicit calculation, we find that the Higgs boson mass can indeed be sizably altered by the right-handed neutrino/sneutrino. Such new contribution can help to push up the SM-like Higgs boson mass and thus make the NMSSM more natural.
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Recommended references: Wang, Wenyu,Yang, Jin Min,You, Lin Lin.(2016).Higgs boson mass in NMSSM with right-handed neutrino.JOURNAL OF HIGH ENERGY PHYSICS.[ChinaXiv:201605.01703] (Click&Copy)
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[V1] 2016-05-14 10:34:15 chinaXiv:201605.01703V1 Download
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