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arXiv · 1711.08959

$S$-wave $K\pi$ contributions to the hadronic charmonium $B$ decays in the perturbative QCD approach

Zhou Rui·Wen-Fei Wang
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Abstract

We extend our recent works on the two-pion $S$-wave resonance contributions to the kaon-pion ones in the $B$ meson hadronic charmonium decay modes based on the perturbative QCD approach. The $S$-wave $K\pi$ time-like form factor in its distribution amplitudes is described by the LASS parametrization, which consists of the $K^*_0(1430)$ resonant state together with an effective range nonresonant component. The predictions for the decays $B\rightarrow J/\psi K\pi$ in this work agree well with the experimental results from $BABAR$ and Belle Collaborations. We also discuss theoretical uncertainties, indicating the results of this work, which can be tested by the LHCb and Belle-II experiments, are reasonably accurate.

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Zhou Rui, Wen-Fei Wang. 2017-11-24. $S$-wave $K\pi$ contributions to the hadronic charmonium $B$ decays in the perturbative QCD approach. https://doi.org/10.1103/physrevd.97.033006

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