2023/06/10 by Wang, Zhong-Yu, Peng, Yu-Wen, Yi, Jing-Yu +2
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2306.06395
The BESIII Collaboration claimed that a new a0(1817) resonance was found in the recent results of the Ds+ → KS0K+π0 decay. For this decay process, we perform a unitary amplitude to analyze the contributions of the states a0(980)+ and a0(1710)+ with the final state interactions. Considering the Cabibbo-favored external and internal W-emission mechanisms at the quark level, and the contributions of the resonances a0(980)+, a0(1710)+ in the S-wave and K*(892)0, K*(892)+ in the P-wave, the recent experimental data of the KS0K+ invariant mass spectrum from the BESIII Collaboration can be described well. In our results, the states a0(980) and a0(1710) are dynamically generated from the final state interactions of KK and K*K*, respectively, which support the molecular nature for them. Moreover, some obtained branching fractions are in agreement with the experimental measurements.