Bu → ψM decays and S-D wave mixing effectsSupported by the National Natural Science Foundation of China (11705047, U1632109, 11547014, 11475055) and Open Research Program of Large Research Infrastructures (2017), Chinese Academy of Sciences

Yang, Yueling (Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, China) ; Guo, Yupei (Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, China) ; Sun, Junfeng (Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, China) ; Wang, Na (Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, China) ; Chang, Qin (Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, China) ; Lu, Gongru (Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, China)

24 October 2018

Abstract: The Bu → ψM decays are studied with the perturbative QCD approach, where the psion ψ = ψ(2S), ψ(3770), ψ(4040) and ψ(4160), and the light meson M = π, K, ρ and K*. The factorizable and non-factorizable contributions, and the S-D wave mixing effects on the psions, are considered in the calculation. With appropriate inputs, the branching ratios for the Bu → ψK decays are generally coincident with the experimental data within errors. However, due to the large theoretical and experimental errors, it is impossible for the moment to give a severe constraint on the S-D wave mixing angles.


Published in: Chinese Phys. C 42 (2018) 113102
Published by: Institute of Physics Publishing/Chinese Academy of Sciences
DOI: 10.1088/1674-1137/42/11/113102
arXiv: 1808.07605
License: CC-BY-3.0



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