Regular Article - Theoretical Physics
Pionic transitions from to D wave charmonia
School of Physics, Southeast University, 210094, Nanjing, People’s Republic of China
2 Institute of Particle and Nuclear Physics, Henan Normal University, 453007, Xinxiang, China
3 Lanzhou Center for Theoretical Physics, Lanzhou University, 730000, Lanzhou, China
Accepted: 15 October 2023
Published online: 6 November 2023
In the present work, we investigate the charmed meson loops contributions to the pionic transitions from to the D wave triplets charmonia by using an effective Lagrangian approach. Our estimations indicate that the predicted branching fraction of are much smaller than the one of . Thus, searching in the invariant mass distributions is impossible. Thus, the observed peak structures at 4.04 and 4.13 GeV in the invariant mass distributions should not come from the contributions of , and further precise experimental measurements of the process are needed to decode the nature of these two peak structures.
© The Author(s) 2023
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