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

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.

arXiv comment8 pages, 4 figures

References in corpus (5)

• Dibaryons in a constituent quark model
• Coupled channel approach to strangeness S = -2 baryon-bayron interactions in Lattice QCD
• Dibaryons with two strange quarks and total spin zero in a constituent quark model
• Dibaryons with two strange quarks and one heavy flavor in a constituent quark model
• Tribaryon configurations and the inevitable three nucleon repulsions at short distance

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