Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-09-09
Phys.Lett.B699:258-263,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
16pages, 6figures. To be published in Physics Letters B
Scientific paper
10.1016/j.physletb.2011.04.001
A wide class of Higgs sectors is investigated in supersymmetric standard models. When the lightest Higgs boson (h) looks the standard model one, the mass (m_h) and the triple Higgs boson coupling (the hhh coupling) are evaluated at the one-loop level in each model. While m_h is at most 120-130 GeV in the minimal supersymmetric standard model (MSSM), that in models with an additional neutral singlet or triplet fields can be much larger. The hhh coupling can also be sensitive to the models: while in the MSSM the deviation from the standard model prediction is not significant, that can be 30-60 % in some models such as the MSSM with the additional singlet or with extra doublets and charged singlets. These models are motivated by specific physics problems like the mu-problem, the neutrino mass, the scalar dark matter and so on. Therefore, when h is found at the CERN Large Hadron Collider, we can classify supersymmetric models by measuring m_h and the hhh coupling accurately at future collider experiments.
Kanemura Shinya
Shindou Tetsuo
Yagyu Kei
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