论文标题
$ d^+\ to k^-k^+k^+$ decay中的标量共鸣
Scalar resonances in the $D^+\to K^-K^+K^+$ decay
论文作者
论文摘要
从理论上讲，我们研究了双Cabibbo的谐振结构，抑制了$ d^+\ to k^-k^+k^+$衰减。我们从一个基本生产图开始，该图被认为是在以前的方法中被视为旋界的，该方法无法在树级上产生最终的$ k^ - k^+$对，但我们表明能够通过最终的梅森 - 梅森状态相互作用来提供衰变的强度。不同的Meson-Meson基本生产是通过SU（3）相关的（3），并且最终的拆卸是通过适当的chpt单一扩展实施实现的，该算法的统一分机会动态产生标量共振$ F_0（980）$和$ A_0（980）$。我们通过LHCB合作的最新实验数据获得了一项良好的协议，其适合度的自由度最小，并显示了$ a_0（980）$贡献的优势接近$ k^-k^-k^+spectrum的阈值。
We study theoretically the resonant structure of the double Cabibbo suppressed $D^+\to K^- K^+K^+$ decay. We start from an elementary production diagram, considered subleading in previous approaches, which cannot produce a final $K^- K^+$ pair at the tree level but which we show to be able to provide the strength of the decay through final meson-meson state interaction. The different meson-meson elementary productions are related through SU(3) and the final rescattering is implemented from a suitable implementation of unitary extensions of ChPT which generate dynamically the scalar resonances $f_0(980)$ and $a_0(980)$. We obtain a good agreement with recent experimental data from the LHCb collaboration with a minimal freedom in the fit and show the dominance of the $a_0(980)$ contribution close to the threshold of the $K^- K^+$ spectrum.
