Phase Transitions in the NMSSM
Phase Transitions in the NMSSM
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DOI：
10.1143/ptp.114.369
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发表时间：
2005-01
影响因子：
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通讯作者：
K. Funakubo;S. Tao;F. Toyoda
中科院分区：
文献类型：
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作者：
K. Funakubo;S. Tao;F. Toyoda
研究了次极小超对称标准模型（NMSSM）在Higgs谱和真空稳定性的约束下，单重态标量的弱标度真空期望值下的相变.我们发现四种不同类型的相变，其中三个有两个阶段的性质。特别是，两阶段的转变之一承认强烈的一阶电弱相变，即使与重方。我们在Higgs扇区引入了一个不影响中子电偶极矩的树形CP破坏。与在squark扇区中具有CP破坏的MSSM相比，强一阶相变不会被这种CP破坏所削弱。
We study phase transitions in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with the weak scale vacuum expectation values of the singlet scalar, constrained by Higgs spectrum and vacuum stability. We find four different types of phase transitions, three of which have two-stage nature. In particular, one of the two-stage transitions admits strongly first order electroweak phase transition, even with heavy squarks. We introduce a tree-level explicit CP violation in the Higgs sector, which does not affect the neutron electric dipole moment. In contrast to the MSSM with the CP violation in the squark sector, a strongly first order phase transition is not so weakened by this CP violation.