Speaker
Description
To explore the possibility of H-like dibaryon $\Lambda_c \Lambda_c(0^+)$, we proceed calculation on lattice. Two Wilson-Clover ensembles are used which were generated by CLQCD collaboration with similar settings that $m_\pi \approx 303$ MeV, $m_{D} \approx 1.966$ GeV, $m_{D^\ast} \approx 2.077$ GeV. In this work, finite-volume scattering with single channel L$\mathrm{\ddot{u}}$scher's formula is adopted because the coupling between $\Lambda_c\Lambda_c$ and $\Xi_{cc}N$ is quite small according to our calculation. There is a sign of the CDD zero pole here. By parameterizing the L$\mathrm{\ddot{u}}$scher's scattering matrix, S and D wave phase shift can be given then. However, we find no bound state within a single channel $\Sigma_c\Sigma_c$. Further, the coupling between $\Lambda_c\Lambda_c$ and $\Sigma_c\Sigma_c$ is a little strong.
