F0(500) , F0(980) , and A0(980) Production in the Ïc1âî·ï+ï- Reaction
Wei-Hong Liang (0000 0001 2196 0260grid.459584.1, Department of Physics, Guangxi Normal University, 541004, Guilin, China); Ju-Jun Xie (0000 0000 8571 0482grid.32566.34, Research Center for Hadron and CSR Physics, Institute of Modern Physics of CAS, Lanzhou University, 730000, Lanzhou, China, 0000000119573309grid.9227.e, Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China); Eulogio Oset (Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071, Valencia, Spain, 0000000119573309grid.9227.e, Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China)
We study the χc1→ηπ+π- decay, paying attention to the production of f0(500) , f0(980) , and a0(980) from the final state interaction of pairs of mesons that can lead to these three mesons in the final state, which is implemented using the chiral unitary approach. Very clean and strong signals are obtained for the a0(980) excitation in the ηπ invariant mass distribution and for the f0(500) in the π+π- mass distribution. A smaller, but also clear signal for the f0(980) excitation is obtained. The results are contrasted with experimental data and the agreement found is good, providing yet one more test in support of the picture where these resonances are dynamically generated from the meson–meson interaction.
