Studies of the resonance components in the [Formula omitted] decays into charmonia plus kaon pair

• Published in: The European physical journal. C, Particles and fields Vol. 79; no. 9; pp. 1 - 16
• Main Authors: Rui, Zhou, Li, Ya, Li, Hong
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 24.09.2019; Springer Nature B.V
• Subjects: Decay; Kaons; Large Hadron Collider; Mass spectra; P waves; Resonance; S waves; Tensors
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-019-7313-3

In this work, the decays of [Formula omitted] meson to a charmonium state and a [Formula omitted] pair are carefully investigated in the perturbative QCD approach. Following the latest fit from the LHCb experiment, we restrict ourselves to the case where the produced [Formula omitted] pair interact in isospin zero S, P, and D wave resonances in the kinematically allowed mass window. Besides the dominant contributions of the [Formula omitted] resonance in the P-wave and [Formula omitted] in the D-wave, other resonant structures in the high mass region as well as the S-wave components are also included. The invariant mass spectra for most of the resonances in the [Formula omitted] decay are well reproduced. The obtained three-body decay branching ratios can reach the order of [Formula omitted], which seem to be accessible in the near future experiments. The associated polarization fractions of those vector-vector and vector-tensor modes are also predicted, which are compared with the existing data from the LHCb Collaboration.