4.7 Article

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

期刊

EUROPEAN PHYSICAL JOURNAL C
卷 82, 期 3, 页码 -

出版社

SPRINGER
DOI: 10.1140/epjc/s10052-022-10178-3

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资金

  1. National Natural Science Foundation of China [12175066, 11975009, 12147219, 11975041, 11735003]
  2. Spanish Ministerio de Economia y Competitividad (MINECO)
  3. European FEDER funds [FIS2017-84038-C2-1-P B, PID2020-112777GB-I00]
  4. Generalitat Valenciana [PROMETEO/2020/023]
  5. European Union [H2020-INFRAIA-2018-1, 824093]

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In this study, the decay modes of the D-s(+) decay producing a pion and two vector mesons were identified. Two resonances associated with the f(0)(1710) and a(0)(1710) were generated through posterior vector-vector interaction and decayed into the observed K+K- or (KSKS0)-K-0 pair. The study also determined parameters consistent with experimental results and predicted the branching ratio of the a(0)(1710) contribution to the D-s(+)->pi(K+KS0)-K-0 reaction.
We have identified the decay modes of the D-s(+)-> pi K+*K+*(-),pi+K*(0)(K) over bar*(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 (KSKS0)-K-0 pair, leading to the reactions D-s(+)->pi+K+K-,pi(+KSKS0)-K-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(+)->pi(K+KS0)-K-0 reaction, finding values within the range of (1.3 +/- 0.4)x10(-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.

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