Quasi Three-Body Decay of D Meson  

作　　者：T.Estabar H.Mehraban T.Estabar;H.Mehraban(Physics Department, Semnan University)

机构地区：Physics Department, Semnan University, P.O. Box 35195-363, Semnan, Iran

出　　处：《Communications in Theoretical Physics》2018年第4期407-416,共10页理论物理通讯（英文版）

摘　　要：The aim of this work is to provide a phenomenological analysis of the contribution of D^0 meson to K*(892)~0π^+π^-(K*(892)~0-→π^+K^-), K^-π^+ω(ω-→π^+π^-π~0) and K^-π^+?(?(1020)-→ K^+K^-) quasi-three-body decays. The analysis of mentioned multi-body decays is such as to factorize into the three-body decay and several channels observed. Hadronic three-body decays receive both resonant and non-resonant contribution. Based on the factorization method, there are tree and emission annihilation diagrams for these decay modes. In the case of D^0 to vector pseudoscalar states appeared in factored terms, the matrix elements of the vector and axial vector currents between the D^0 and PV mesons can be computed by using D^(*+)pole. Considering the non-resonant and resonant amplitude in our computation,the theoretical values of the branching ratio are(9.78 ± 0.46) × 10^(-3),(2.74 ± 0.17) × 10^(-2), and(3.53 ± 0.23) × 10^(-5), while the experimental results of them are(9.9 ±2.3) × 10^(-3),(2.7 ± 0.5) × 10^(-2), and(4 ± 1.7) × 10^(-5) respectively. Comparing computational analysis values with experimental values show that our results are in approximately agreement with them.

关 键 词：three-body decay factorization method non-resonant contribution resonant contribution branching ratio 

分 类 号：O572.33[理学—粒子物理与原子核物理] TS255.3[理学—物理]