论文标题
标量$ a_0（980）$在单个cabibbo抑制过程中的角色
Role of scalar $a_0(980)$ in the single Cabibbo Suppressed process $D^+ \to π^{+} π^{0} η$
论文作者
论文摘要
考虑到可以从手性统一方法中的伪符号相互作用中动态生成标量$ a_0（980）$，我们研究了单个Cabibbo抑制的过程$ d^+\toπ^+π^0η$。我们在$π^+η$和$π^+η$和$π^0η$不变的质量分布中发现了$ a_0（980）^+$和$ a_0（980）^0 $的清晰峰。 $ d^+\ toπ^+π^0η$的预测dalitz图还显示了$ a_0（980）^+$和$ a_0（980）^0 $状态的重要信号。还讨论了由于自由参数而导致的结果的不确定性。我们的研究表明，该过程$ d^+\至π^+π^0η$可用于探索标量$ A_0（980）$的性质，因此我们鼓励实验物理学家更精确地测量此反应。
Taking into account that the scalar $a_0(980)$ can be dynamically generated from the pseudoscalar-pseudoscalar interaction within the chiral unitary approach, we have studied the single Cabibbo-suppressed process $D^+\to π^+π^0η$. We find clear peaks of $a_0(980)^+$ and $a_0(980)^0$ in the $π^+η$ and $π^0η$ invariant mass distributions, respectively. The predicted Dalitz plots of $D^+\to π^+π^0η$ also manifest the significant signals for $a_0(980)^+$ and $a_0(980)^0$ states. The uncertainties of the results due to the free parameters are also discussed. Our study shows that the process $D^+\to π^+π^0η$ can be used to explore the nature of the scalar $a_0(980)$, thus we encourage the experimental physicists to measure this reaction with more precision.
