We investigate the K* production in the KN → Kπp the isobar model. To describe this reaction, we first take into account the contributions from the π, ρ and ω exchanges, as in previous studies. We find that altho...We investigate the K* production in the KN → Kπp the isobar model. To describe this reaction, we first take into account the contributions from the π, ρ and ω exchanges, as in previous studies. We find that although the experimental data can be generally described, there are some obvious discrepancies between the model and the experiments. To improve the model, we consider the contributions of the axial-vector meson and hyperon exchange. It is shown that a large contribution of the axial-vector meson exchange can significantly improve the results. This may indicate that the coupling of the axial-vector meson,e.g. a1（1260）, is large in the KK* density matrix elements of K*0 in the KLp → K*0 p tion for a future comparison.展开更多
基金Supports from the National Natural Science Foundation of China(U1832160,11375137)the Natural Science Foundation of Shaanxi Province(2019JM-025)the Fundamental Research Funds for the Central Universities
文摘We investigate the K* production in the KN → Kπp the isobar model. To describe this reaction, we first take into account the contributions from the π, ρ and ω exchanges, as in previous studies. We find that although the experimental data can be generally described, there are some obvious discrepancies between the model and the experiments. To improve the model, we consider the contributions of the axial-vector meson and hyperon exchange. It is shown that a large contribution of the axial-vector meson exchange can significantly improve the results. This may indicate that the coupling of the axial-vector meson,e.g. a1（1260）, is large in the KK* density matrix elements of K*0 in the KLp → K*0 p tion for a future comparison.
