论文标题
从分散数据分析中确定最轻的奇怪共振$ k_0^*（700）$或$κ$
Determination of the lightest strange resonance $K_0^*(700)$ or $κ$, from a dispersive data analysis
论文作者
论文摘要
在这项工作中，我们从最轻的奇怪共振$κ/k_0^*（700）$的数据的数据中提出了精确和与模型无关的分散性确定。我们将减去和未提取的部分波屈曲和固定 - $ t $分散关系用作$πk\rightarrowπk$和$ππ\ rightarrow k \ bar k $ data的约束。然后，我们将双曲线方程用于对复杂平面的Isospin $ i = 1/2 $标量部分波的分析延续，以确定$κ/k_0^*（700）$和$ k^*（892）$相关的极点参数和残基。
In this work we present a precise and model-independent dispersive determination from data of the existence and parameters of the lightest strange resonance $κ/K_0^*(700)$. We use both subtracted and unsubtracted partial-wave hyperbolic and fixed-$t$ dispersion relations as constraints on combined fits to $πK\rightarrowπK$ and $ππ\rightarrow K\bar K$ data. We then use the hyperbolic equations for the analytic continuation of the isospin $I=1/2$ scalar partial wave to the complex plane, in order to determine the $κ/K_0^*(700)$ and $K^*(892)$ associated pole parameters and residues.
