%0 Journal Article
%T Traces of the new alpha(0)(1780) resonance in the J/Psi ->phi K+ K-(K-0 K_(0)) reaction
%A Abreu, L. M.
%A Wang, W. F.
%A Oset, E.
%J European Physical Journal C
%D 2023
%V 83
%N 3
%I Springer
%@ 1434-6044
%G English
%F Abreu_etal2023
%O WOS:000957576400004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5505), last updated on Sun, 23 Apr 2023 12:10:22 +0000
%X We study the J/Psi ->phi K+ K- decay, looking for differences in the production rates of K+K- or K-0 K-(0) in the region of 1700-1800 MeV, where two resonances appear dynamically generated from the vector-vector interaction. Two resonances are known experimentally in that region, the f(0)(1710) and a new resonance reported by the BABAR and BESIII collaborations. The K K should be produced with I = 0 in that reaction, but due to the different K*(0) and K*(+) masses some isospin violation appears. Yet, due to the large width of the K*, the violation obtained is very small and the rates of K+K- or K-0 K-0 production are equal within 5%. However, we also find that due to the step needed to convert two vectors into K K, a shape can appear in the K K mass distribution that can mimic the a0 production around the K* K* threshold, and is simply a threshold effect.
%R 10.1140/epjc/s10052-023-11384-3
%U https://arxiv.org/abs/2301.08058
%U https://doi.org/10.1140/epjc/s10052-023-11384-3
%P 243 - 11pp