We investigate the one-loop effect of new charged scalar bosons on the Higgspotential at finite temperatures in the supersymmetric standard model with fourHiggs doublet chiral superfields as well as a pair of charged singlet chiralsuperfields. In this model, the mass of the lightest Higgs boson $h$ isdetermined only by the D-term in the Higgs potential at the tree-level, whilethe triple Higgs boson coupling for $hhh$ can receive a significant radiativecorrection due to nondecoupling one-loop contributions of the additionalcharged scalar bosons. We find that the same nondecoupling mechanism can alsocontribute to realize stronger first order electroweak phase transition thanthat in the minimal supersymmetric standard model, which is definitely requiredfor a successful scenario of electroweak baryogenesis. Therefore, this modelcan be a new candidate for a model in which the baryon asymmetry of theUniverse is explained at the electroweak scale.
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机译：我们在具有四个希格斯双重态手性超场以及一对带电单重态手性超场的超对称标准模型中，研究了有限温度下新带电标量玻色子对希格斯势的单环效应。在此模型中，最轻的希格斯玻色子$ h $的质量仅由树级希格斯势能的D项确定，而三元希格斯玻色子耦合度为$ hhh $时，由于非解耦，可以得到显着的辐射校正。带电标量玻色子的循环贡献。我们发现，与最小超对称标准模型相比，相同的非去耦机制也可以有助于实现更强的一阶电弱相变，这对于成功的电弱重生场景必不可少。因此，该模型可以作为模型的新候选者，其中以电弱尺度解释了宇宙的重子不对称性。
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