Charmonium-nucleon interactions from the time-dependent HAL QCD method
Takuya Sugiura, Yoichi Ikeda, and Noriyoshi Ishii
TL;DR
This paper computes charmonium-nucleon interactions using the time-dependent HAL QCD method, providing updated results that address previous issues with the time-independent approach, and discusses implications for hidden-charm pentaquarks.
Contribution
It introduces the application of the time-dependent HAL QCD method to charmonium-nucleon interactions, improving upon prior results and addressing ground-state saturation issues.
Findings
No bound state observed in the scattering phase shift
Results are consistent with heavy quark symmetry
Method addresses previous limitations of the time-independent approach
Abstract
The charmonium-nucleon effective central interactions have been computed by the time-dependent HAL QCD method. This gives an updated result of a previous study based on the time-independent method, which is now known to be problematic because of the difficulty in achieving the ground-state saturation. We discuss that the result is consistent with the heavy quark symmetry. No bound state is observed from the analysis of the scattering phase shift; however, this shall lead to a future search of the hidden-charm pentaquarks by considering channel-coupling effects.
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