Journal
EUROPEAN PHYSICAL JOURNAL A
Volume 56, Issue 3, Pages -Publisher
SPRINGER
DOI: 10.1140/epja/s10050-020-00078-z
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Funding
- Samsung Science and Technology Foundation [SSTF-BA1901-04]
- Korea National Research Foundation [2018R1D1A1B07043234]
- JSPS [18H05236]
- Grants-in-Aid for Scientific Research [18H05236] Funding Source: KAKEN
- National Research Foundation of Korea [2018R1D1A1B07043234] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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), (10 over bar , 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.
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