PoS - Proceedings of Science
Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Hadron spectroscopy and exotics
Range correction in the weak-binding relation for unstable states
T. Kinugawa* and T. Hyodo
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Pre-published on: March 02, 2022
Published on:
Abstract
The compositeness is defined as the weight of the hadronic molecule in the hadron wave function. We can determine the internal structure of the weak-binding system without any specific models from the compositeness. In order to estimate the compositeness of the system with a large effective range, we introduce the range correction to Weinberg's weak-binding relation by modifying the correction terms. We study the applicability of the weak-binding relations by the numerical calculation and show that the improved relation can be applied to a larger parameter region compared with the previous one.
DOI: https://doi.org/10.22323/1.380.0176
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