2 papers
hep-ph2008★ 9 cited
Exotic Quark Structure of Lambda(1405) in QCD Sum Rule
T. Nakamura, J. Sugiyama, N. Ishii +2
A new analysis is performed in QCD sum rule for the lightest negative parity baryon Lambda (1405). Mixings of three-quark and five-quark Fock components are taken into account. Ter…
hep-ph2007★ 38 cited
Mixings of 4-quark components in light non-singlet scalar mesons in QCD sum rules
J. Sugiyama, T. Nakamura, N. Ishii +2
Mixings of 4-quark components in the non-singlet scalar mesons are studied in the QCD sum rules. We propose a formulation to evaluate the cross correlators of q\bar q and qq\bar q…