Singlet Higgs phenomenology and the electroweak phase transition
Singlet Higgs phenomenology and the electroweak phase transition
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DOI：
10.1088/1126-6708/2007/08/010
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发表时间：
2007-05
影响因子：
5.4
通讯作者：
S. Profumo;M. Ramsey-Musolf;G. Shaughnessy
中科院分区：
文献类型：
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作者：
S. Profumo;M. Ramsey-Musolf;G. Shaughnessy
我们研究了标准模型标量扇区的规范单重态扩展的现象学及其对电弱相变的意义。我们确定了导致强一阶相变的标量势参数的条件，这是产生观测到的宇宙重子不对称所必需的。我们分析了在LEP和电弱精度观测中希格斯玻色子搜索得到的潜在参数的约束。对于满足这些约束并产生强一阶相变的模型，我们讨论了未来在大型强子对撞机和线性对撞机上进行希格斯研究的预期特征。我们认为，这些研究将为具有扩展标量扇区的模型中的相变动力学提供强有力的探测。
We study the phenomenology of gauge singlet extensions of the Standard Model scalar sector and their implications for the electroweak phase transition. We determine the conditions on the scalar potential parameters that lead to a strong first order phase transition as needed to produce the observed baryon asymmetry of the universe. We analyze the constraints on the potential parameters derived from Higgs boson searches at LEP and electroweak precision observables. For models that satisfy these constraints and that produce a strong first order phase transition, we discuss the prospective signatures in future Higgs studies at the Large Hadron Collider and a Linear Collider. We argue that such studies will provide powerful probes of phase transition dynamics in models with an extended scalar sector.