论文标题
复合希格斯模型的Electroweak Precision测试
Electroweak precision tests of composite Higgs models
论文作者
论文摘要
我们研究了对Electroweak Precision测量值的Fermion局部综合的复合Higgs模型的约束，包括CDF协作的2022 $ W $ -BOSON质量。我们专注于复合希格斯扇区的模型，这是由基本的四维强烈相互作用的仪表理论与费米子（Fermions）以及Sm fermions通过费米子和复合扇区之间的线性混合项（所谓的fermion fermion fermion partial Ential Extiperes senio senapario of fermions romentia。通常，复合higgs扇区导致了一个小且正面的$ s $参数，而负$ t $参数，但是Fermion Partial Compositenes部门在很大一部分参数空间中导致总体正面$ T $参数。因此，我们在LEP和CDF的$ s $和$ t $上的当前复合模型与当前的Electroweak Precision测量范围之间找到了良好的协议，包括相对于SM预测的$ s，t $的偏移和相关性。
We study constraints on Composite Higgs models with fermion partial compositeness from electroweak precision measurements, including the 2022 $W$-boson mass result from the CDF collaboration. We focus on models where the Composite Higgs sector arises from underlying four-dimensional strongly interacting gauge theories with fermions, and where the SM fermions obtain their mass via linear mixing terms between the fermions and the composite sector -- the so-called fermion partial compositeness scenario. In general, the Composite Higgs sector leads to a small and positive $S$ parameter, and a negative $T$ parameter, but the fermion partial compositeness sector results in an overall positive $T$ parameter in a large part of parameter space. We, therefore, find good agreement between the full composite models and the current electroweak precision measurement bounds on $S$ and $T$ from LEP and CDF, including the offset and correlation of $S,T$ with respect to the SM predictions.
