The scalars $a_0(980)$ and $f_0(980)$ in the process $D_s^+ \to K^{+} K^{-} \pi^{+}$

In this work, we have investigated the process $D_{s}^{+} \to K^{+} K^{-} π^{+}$ , taking into account the contributions from the $S$ -wave pseudoscalar-pseudoscalar interaction within the chiral unitary approach, and also the intermediate $ϕ$ resonance. By analyzing the BESIII and {\it BABAR} measurements, we conclude that the $f_{0} (980)$ state, dynamically generated from the $S$ -wave pseudoscalar-pseudoscalar interaction, gives the dominant contribution close to the $K^{+} K^{-}$ threshold in the $K^{+} K^{-}$ invariant mass distribution of the decay $D_{s}^{+} \to K^{+} K^{-} π^{+}$ in $S$ -wave. On the other hand, our results imply that the lineshape adopted by BESIII and {\it BABAR} for the resonances $a_{0} (980)$ and $f_{0} (980)$ is not advisable in the fit to the data close to the $K^{+} K^{-}$ threshold.

The scalars $a_{0} (980)$ and $f_{0} (980)$ in the process $D_{s}^{+} \to K^{+} K^{-} π^{+}$

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The scalars $a_{0} (980)$ and $f_{0} (980)$ in the process $D_{s}^{+} \to K^{+} K^{-} π^{+}$

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The scalars a0(980)a0​(980) and f0(980)f0​(980) in the process Ds+→K+K−π+Ds+​→K+K−π+

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The scalars a0(980)a0​(980) and f0(980)f0​(980) in the process Ds+→K+K−π+Ds+​→K+K−π+

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The scalars $a_{0} (980)$ and $f_{0} (980)$ in the process $D_{s}^{+} \to K^{+} K^{-} π^{+}$

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The scalars $a_{0} (980)$ and $f_{0} (980)$ in the process $D_{s}^{+} \to K^{+} K^{-} π^{+}$

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