Speaker
Description
We investigate $\Lambda_{c}-N$ interaction in the spin singlet channel ($^1S_0$) and the spin triplet coupled channel ($^3S_1-{^3D_1}$) from lattice QCD by using HAL QCD method. We perform the first physical point simulation by employing gauge configurations generated by the HAL Collaboration at $m_{\pi}\simeq137$ MeV, $m_{K}\simeq 502$ MeV, and $a \simeq 0.0844$ fm on $96^4$ lattices (HAL-Conf-2023) in which a high statistical precision was achieved by 8000 Monte Carlo trajectories. Our calculations of the $\Lambda_{c}-N$ potential show a weak mid-range attraction and a short-range repulsive core. This is qualitatively similar to the results obtained in our previous calculations at heavier pion masses, $m_{\pi} \simeq 410,\ 570,\ 700$ MeV, while the current results at the physical point indicate a shallower mid-range attraction compared to the previous results. With the ALICE upgrade for LHC Run-3, which aims for a fifty-times increase in recorded collisions, the increased statistics of charm baryons may enhance the feasibility of the measurements of $\Lambda_{c}-N$ femtoscopic correlations, making it possible to analyze the $\Lambda_{c}-N$ interaction by both lattice QCD and experimental data. The present results at the physical point with the coupled-channel effect would also make a significant impact on the studies of $\Lambda_{c}-N$ interactions based on chiral effective field theory.
| Category | Theory |
|---|---|
| Collaboration | HAL QCD |
