Study of $D_s^{+}\to K^{+}{K}^{-}{\pi }^{+}$ decay

Abstract

We investigate the $D_s^{+}\to K^{+}{K}^{-}{\pi }^{+}$ decay theoretically with the final state interactions, which is based on the chiral unitary approach and takes into account the external and internal $W$-emission mechanisms at the quark level. Only considering three resonances contributions, the $f_0(980)$ in $S$-wave, the ${\bar{K}}^{\ast }(892{)}^0$ and $\varphi (1020)$ in $P$-wave, one can make a good description of the recent experimental data from BESIII Collaboration, where the contribution from $S$-wave is found to be small. Besides, we also make a calculation of the corresponding branching fractions, which are consistent with the results of BESIII Collaboration and Particle Data Group.

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