- 著者
- Aoki Sinya Balog Janos Weisz Peter
- 出版者
- Springer
- 雑誌
- Journal of high energy physics (ISSN:10298479)
- 巻号頁・発行日
- no.9, pp.83, 2010-09
- 被引用文献数
- 7 13
The short distance behavior of baryon-baryon potentials defined throughNambu-Bethe-Salpeter wave functions is investigated using the operator product expansion.In a previous analysis of the nucleon-nucleon case, corresponding to the SU(3) channels27s and 10a, we argued that the potentials have a repulsive core. A new feature occursfor the case of baryons made up of three flavors: manifestly asymptotically attractive potentialsappear in the singlet and octet channels. Attraction in the singlet channel wasfirst indicated by quark model considerations, and recently been found in numerical latticesimulations. The latter have however not yet revealed asymptotic attraction in the octetchannels; we give a speculative explanation for this apparent discrepancy.