Abstract
In order to interpret the Higgs boson mass and its decays naturally, we hope to examine the BLMSSM and B-LSSM. In the both models, the right-handed neutrino superfields are introduced to better explain the neutrino mass problems. In this paper, we introduce the fine-tuning to acquire the physical Higgs boson mass. Besides, the method of chi ^2 analyses will be adopted in the BLMSSM and B-LSSM to fit the experimental data. Therefore, we can obtain the reasonable theoretical values of the Higgs decays and muon g-2 that are in accordance with the experimental results respectively in the BLMSSM and B-LSSM.
Highlights
The standard model (SM) has been confirmed by many experiments
The models B-LSSM and BLMSSM are better for addressing fine-tunings in the Higgs sector than the Minimal Supersymmetric SM (MSSM)
We consider the corresponding comparison of fine-tunings in the Higgs sector between MSSM and B-LSSM(BLMSSM), which is strongly influenced by the stop quark masses
Summary
DM can be both scalar particles and fermions. The lightest one of left handed sneutrinos in MSSM as a potential DM candidate is excluded by direct LEP searches and cosmological observations due to its large interactions with the Z boson. The lightest neutralino will be the only viable DM candidate in the MSSM. The neutrino collision experiment can not be explained well in the MSSM. MSSM can not explain the matter-antimatter asymmetry. LHC possesses very strict restrictions on the parameter space of MSSM, which may be excluded by the experiment in the near future. We need to extend the MSSM and BLMSSM(B-LSSM) is a favorite choice
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