Speaker
Description
We present first-principles lattice QCD results for the strangeness $S = -1$ sector of baryon-baryon interactions with the physical masses for the first time. Employing the (2+1)-flavor gauge configurations (HAL-conf-2023) [1] generated on the physical point, $(m_\pi , m_K) = (137, 502)~\mathrm{MeV}$, we calculate baryon-baryon correlation functions using the supercomputer Fugaku and extract potentials by the HAL QCD method [2]. We analyze the coupled-channel potentials for $N\Lambda$-$N\Sigma$ ($I = 1/2, ^1S_0$ and $^3S_1$) and the potentials for $N\Sigma$ ($I = 3/2$, $^1S_0$ and $^3S_1$). We compare our results with the data, including phase shifts in scattering experiments and femtoscopic correlation functions in high-energy collisions for $\Sigma^+ p$ [3,4].
| Parallel Session (for talks only) | Hadronic and nuclear spectrum and interactions |
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