PoS - Proceedings of Science
Volume 413 - The 10th International Workshop on Chiral Dynamics (CD2021) - Zheng
Detecting the pure triangle singularity effect through the ψ(2S) decay
J. Wu
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Pre-published on: February 07, 2024
Published on: March 07, 2024
Abstract
In this paper, we discuss two processes for detecting the pure triangle singularity effect through the decays of $\psi(2S)$. The triangle singularity is proposed around 1959, but until now there is no confirmed experimental evidence. Thus, we explore the $\psi(2S)\to p\bar{p}\eta$ and $\psi(2S)\to \pi^+\pi^-K^+K^-$ processes to predict the pure triangle singularity effect by a model independent calculation. From these studies, we find that it needs to choose a proper width of the intermediate particle around several MeV, which will be the best place to find the signal of the triangle singularity effect.
DOI: https://doi.org/10.22323/1.413.0052
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