Speaker
Yiqi Geng
(IMP and NNU)
Description
To explore the properties of H-like dibaryon $\Lambda_c \Lambda_c(0^+)$, we proceed ab-initio calculation on lattice. Two Wilson-Clover ensembles are used with the same setup at $m_\pi \approx 303 \,$MeV and lattice spacing $a\approx0.07746\,$fm. We find the coupling between $\Lambda_c\Lambda_c$ and $\Xi_{cc}N$ or $\Sigma_c\Sigma_c$ couldn't convert the repulsion between two $\Lambda_c$s into attraction. Therefore single channel is considered. A discretized modification on L$\mathrm{\ddot{u}}$scher equation is firstly proposed in this work. Phase shift also shows the weak interaction and scattering length $a_0$ is $-1.43(49)\,$fm. Under this quark mass, we find no bound state relying on our calculation.
Primary author
Yiqi Geng
(IMP and NNU)
Co-authors
Hanyang Xing
(IMP)
Jia-Jun Wu
(University of Chinese Academy of Sciences)
Liuming Liu
(Institute of Modern Physics, CAS)
Peng Sun
(IMP)
ruilin Zhu
(NNU)
