论文标题
最小复合材料希格斯的电动性男性生成状态
Status of Electroweak Baryogenesis in Minimal Composite Higgs
论文作者
论文摘要
我们介绍了在最小复合希格斯模型中电动性男性生成状态的更新。该框架的特殊性在于,电动相位过渡可以同时进行与产生复合higgs的新的强动力学的限制相变。后一个过渡由DILATON控制 - 复合部门近似尺度不变性的伪石玻色子。由于它自然是一阶,因此电子相变也成为一阶。另一个吸引人的方面是,在这种情况下,自然而然地内置的CP违反CP违规根源可能是Yukawa耦合的变化。这两个功能涉及标准模型中电动性男性生成的缺点。我们面对这种情况,以对撞机搜索希格斯耦合和电动偶极矩的新共振和测量的最新实验界限。所有这些约束提供(或能够在不久的将来提供)在考虑的方案上的重要界限,其中最严格的限制来自LHC搜索的新共鸣,从而限制了Dilaton质量和耦合。我们确定了满足所有约束的参数空间的可行区域,其特征是$ 300-500 $ GEV范围内的Dilaton质量和Higgs衰减常数$ f \ lyssim 1.1 $ $ tev。我们讨论其未来测试。
We present an update on the status of electroweak baryogenesis in minimal composite Higgs models. The particularity of this framework is that the electroweak phase transition can proceed simultaneously with the confinement phase transition of the new strong dynamics that produces the composite Higgs. The latter transition is controlled by the dilaton - the pseudo-Goldstone boson of an approximate scale invariance of the composite sector. Since it naturally is first-order, the electroweak phase transition becomes first-order too. Another appealing aspect is that the necessary additional source of CP violation can arise from the variation of the quark Yukawa couplings during the phase transition, which is built-in naturally in this scenario. These two features address the shortcomings of electroweak baryogenesis in the Standard Model. We confront this scenario with the latest experimental bounds derived from collider searches for new resonances and measurements of the Higgs couplings and electric dipole moments. All these constraints provide (or will be able to provide in the near future) important bounds on the considered scenario, with the most stringent ones coming from LHC searches for new resonances which constrain the dilaton mass and couplings. We identify the viable region of parameter space which satisfies all the constraints, and is characterized by a dilaton mass in the $300-500$ GeV range and a Higgs decay constant $f \lesssim 1.1$ TeV. We discuss its future tests.