Title: Branching ratios for Higgs-mixed scalars at the GeV scale from hadronisation models with conservation laws Show Chinese title

Title: GeV尺度上希格斯混合标量的分支比，来自满足守恒定律的强子化模型

Abstract: We investigate the decay modes of a CP-even scalar boson $\phi$ that mixes with the Standard Model Higgs boson, focusing on the mass range between 2 GeV and $2 m_\tau$. Starting from a higher-order perturbative calculation of the inclusive decays $\phi \to gg$ and $\phi \to s\bar{s}$, we employ a hadronisation model to obtain predictions for individual hadronic final states. Our hadronisation model is based on the Herwig cluster model, but incorporates various conservation laws to determine the allowed final states and their respective weights. The model includes two tunable parameters, which we determine using dispersion relation results at $m_\phi = 2$ GeV, enabling extrapolation to higher masses. Our predictions show that two-particle hadronic final states like $\pi^+ \pi^-$ and $K^+ K^-$ dominate over $\mu^+ \mu^-$ for $m_\phi$ near 2 GeV, suggesting promising targets for future experimental searches. Show Chinese abstract

Abstract: 我们研究了与标准模型希格斯玻色子混合的CP对称标量玻色子$\phi$的衰变模式，重点关注2 GeV到$2 m_\tau$的质量范围。 从包含衰变$\phi \to gg$和$\phi \to s\bar{s}$的高阶微扰计算出发，我们采用强子化模型来获得各个强子最终态的预测。 我们的强子化模型基于Herwig簇模型，但结合了各种守恒定律以确定允许的最终态及其相应的权重。 该模型包含两个可调参数，我们通过在$m_\phi = 2$GeV 处的色散关系结果来确定这些参数，从而能够外推到更高的质量。 Our predictions show that two-particle hadronic final states like $\pi^+ \pi^-$ and $K^+ K^-$ dominate over $\mu^+ \mu^-$ for $m_\phi$ near 2 GeV, suggesting promising targets for future experimental searches.