出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We investigate baryon-baryon interactions with the strangeness S = −2 system in 2+1 flavor lattice QCD, using gauge configurations provided by the CP-PACS/JLQCD Collaborations. The potential matrix is extracted by the Nambu-Bethe-Salpeter amplitudes from lattice QCD simulation through the LL, NX, SS and LS coupled-channel Schrödinger equation. We confirmed that qualitative features of the potential matrix are consistent with those from SU(3) symmetric calculations and effects of SU(3) breaking in baryon-baryon interactions are still small even in the situation of mp ≃ 661MeV and mp /mK = 0.86.
