Abstract
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 TeV-scale Majorana mass for the right-handed neutrino through the SN N coupling when S develops a vev (the free Majorana mass term is forbidden by the assumed Z 3 symmetry). Also, through the couplings SN N and SH u H d, 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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ArXiv ePrint: 1303.6465
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Wang, W., Yang, J.M. & You, L.L. Higgs boson mass in NMSSM with right-handed neutrino. J. High Energ. Phys. 2013, 158 (2013). https://doi.org/10.1007/JHEP07(2013)158
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DOI: https://doi.org/10.1007/JHEP07(2013)158