HADRON2023

The Ds+ decay into π+KS0KS0 reaction and the I=1 partner of the f0(1710) state

7 Jun 2023, 17:10

20m

DAD - Room 5L (Genova, Italy)

Contributed Light meson spectroscopy Light meson spectroscopy

Speaker

Lianrong DAI

Description

We have identified the decay modes of the $D_s^{+}\to {\pi }^{+}{K}^{\ast +}{K}^{\ast -},{\pi }^{+}{K}^{\ast 0}{\overline{K}}^{\ast 0}$ reactions producing a pion and two vector mesons. The posterior vector-vector interaction generates two resonances that we associate to the $f_0(1710)$ and the $a_0(1710)$ recently claimed, and they decay to the observed $K^{+}{K}^{-}$ or $K_S^0{K}_S^0$ pair, leading to the reactions $D_s^{+}\to {\pi }^{+}{K}^{+}{K}^{-},{\pi }^{+}{K}_S^0{K}_S^0$. The results depend on two parameters related to external and internal emission. We determine a narrow region of the parameters consistent with the large $N_c$ limit within uncertainties which gives rise to decay widths in agreement with experiment. With this scenario we make predictions for the branching ratio of the $a_0(1710)$ contribution to the $D_s^{+}\to {\pi }^0{K}^{+}{K}_S^0$ reaction, finding values within the range of $(1.3\pm 0.4)\times {10}^{-3}$. Comparison of these predictions with coming experimental results on that latter reaction will be most useful to deepen our understanding on the nature of these two resonances.

Presentation materials

1 dai genova epjc.pdf

2-eps-epjc-proc.tex

cimento.cls

epjc-license.pdf

fig1.eps

fig2.eps

fig6.eps

fig7.eps

fig8.eps

final-2-eps-epjc-proc.pdf

Peer reviewing

Paper

Accepted on 5 Feb 2024 by Mikhail Osipenko

Paper files:

• 2-eps-epjc-proc-new.tex
• fig7.eps
• fig8.eps
• final.pdf
• epjc-license.pdf
• fig1.eps
• fig2.eps
• fig6.eps