Akademik Veri Yönetim Sistemi
17th International Conference on Hadron Spectroscopy and Structure, Hadron 2017, Salamanca, İspanya, 25 - 29 Eylül 2017, cilt.310
We briefly discuss how the chiral unitary approach in coupled channels and SU(3) symmetry can be used to describe the production of f0(500), f0(980) and a0(980) in the χc 1 → ηπ+π− reaction, recently measured by the BESIII collaboration. In this reaction a very strong peak for the a0(980) can be seen in the ηπ invariant mass, while clear signals for the f0(500) and f0(980) appear in the one of π+π−. Next, we show the predictions made with the same model for the analogous decay ηc → ηπ+π−, which could also be measured experimentally. We discuss the differences of these two reactions which are interesting to test the picture where these scalar mesons are dynamically generated from the interaction of pairs of pseudoscalars. Furthermore, we comment on a new recent work where the same model was used to study the a0(980) − f0(980) mixing in the χc 1 → π0π0η and χc 1 → π0π+π− reactions, showing that quantitative agreement with the experimental measurement of this mixing, also performed by BESIII, can be obtained, revealing interesting aspects of the dynamics of this process and the importance of coupled channels.