Form factor for Dalitz decays from / To Light Pseudoscalars
Chunjiang Shi (Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China); Ying Chen (Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China); Xiangyu Jiang (Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China, CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China); Ming Gong (Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China); Zhaofeng Liu (Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China, Center for High Energy Physics, Peking University, Beijing 100871, China); et al - Show all 6 authors
We calculate the form factor $M(q^2)$ for the Dalitz decay $M(q^2)$ with $M(q^2)$ being the SU( $M(q^2)$ ) flavor singlet pseudoscalar meson. The difference among the partial widths $M(q^2)$ at different $M(q^2)$ can be attributed in part to the $M(q^2)$ and quark mass dependences induced by the $M(q^2)$ anomaly dominance. $M(q^2)$ in both $M(q^2)$ is well described by the single pole model $M(q^2)$ . Combined with the known experimental results of the Dalitz decays $M(q^2)$ , the pseudoscalar mass $M(q^2)$ dependence of the pole parameter $M(q^2)$ is approximated by $M(q^2)$ with $M(q^2)$ and $M(q^2)$ . These results provide inputs for future theoretical and experimental studies on the Dalitz decays $M(q^2)$ .
