# Baryon-baryon interactions at short distances -- constituent quark model meets lattice QCD

## TL;DR

This paper compares short-range baryon-baryon interactions predicted by the constituent quark model with recent lattice QCD results, finding good qualitative agreement and insights into underlying quark interactions.

## Contribution

It introduces a ratio-based measure to compare CQM and lattice QCD results for baryon interactions, highlighting the role of quark-level Pauli principle and spin-dependent forces.

## Key findings

- CQM ratios agree with lattice QCD results
- Short-range interactions are explained by quark-level Pauli principle
- Spin-dependent color interactions are key to understanding baryon forces

## Abstract

The interaction energies between two baryons at short distance in different flavor channels are calculated from the constituent quark model (CQM) and are compared with the recent lattice QCD (LQCD) results for baryon-baryon potentials at short distance. We consider the six-quark system with two strange quarks and focus on the quantum numbers, (Flavor,Spin)=(1,0),(8,1),(10,1),($\overline{10}$,1) and (27,0). The interaction energy is defined by subtracting out isolated baryon masses and relative kinetic energy of two baryons from the total energy of a compact six-quark state. We introduce interaction energy ratio between different flavors as a useful measure to test the prediction of CQM. We find that the ratios in CQM show good agreement with those in LQCD, which indicates that the short range part of the baryon-baryon interaction can be understood qualitatively in terms of the Pauli principle and spin-dependent color interaction among constituent quarks.