Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-03-29
Prog.Theor.Phys.Suppl.168:198-201,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
4pages, no figure, PTPTEX, talk at the Yukawa International Seminar (YKIS2006), "New frontiers in QCD", Kyoto, Japan
Scientific paper
10.1143/PTPS.168.198
Four-quark states are discussed within the constituent quark model. Incompleteness of existed studies of four-quark state with QCD sum rule is analyzed. The masses of diquark cluster were determined by QCD sum rules, and light four-quark states masses were obtained in terms of the diquark. The four-quark state possibility of the newly observed near-threshold p\bar p enhancement, X(1835), X(1812) and X(1576) by BES is discussed.
Huang Tao
Steele Tom
Zhang Ailin
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