a0 (1710)-f0(1710) mixing effect in the Ds+ → KS0KS0π+ decay

With the measurements of the decay D-s(+) -> (KSKS0)-K-0 pi(+) by the BESIII collaboration, we investigate this three-body weak decay via the chiral unitary approach for the final state interaction, where the resonances S(980) and S(1710) are dynamically reproduced with the interaction of eleven coupled channels, and the W-external and W-internal emission mechanisms are considered at the quark level. Besides, we also take into account the contribution from the P-wave resonance K*(892)(+) and make a combined fit of the (KSKS0)-K-0 and K-S(0)pi(+) invariant mass spectra measured by the BESIII collaboration. The fitted results show that the enhancement around 1.7 GeV in (KSKS0)-K-0 mass spectrum is overlapped with two visible peaks, indicating the mixing signal originated from the resonances a(0)(1710) and f(0)(1710) due to their different poles (masses). Thus, the decay D-s(+) -> (KSKS0)-K-0 pi(+) is helpful to reveal their molecular nature with the mixing signal, which can be more precisely measured in the future.