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Light Four-Quark States and New Observations by BES
Author(s) -
Ailin Zhang,
Tao Huang,
T. G. Steele
Publication year - 2007
Publication title -
progress of theoretical physics supplement
Language(s) - English
Resource type - Journals
ISSN - 0375-9687
DOI - 10.1143/ptps.168.198
Subject(s) - diquark , physics , particle physics , quark , quantum chromodynamics , sum rule in quantum mechanics , bottom quark , quark model , state (computer science) , up quark , nuclear physics , top quark , quarkonium , mathematics , algorithm
Four-quark states are discussed within the constituent quark model.Incompleteness of existed studies of four-quark state with QCD sum rule isanalyzed. The masses of diquark cluster were determined by QCD sum rules, andlight four-quark states masses were obtained in terms of the diquark. Thefour-quark state possibility of the newly observed near-threshold p\bar penhancement, X(1835), X(1812) and X(1576) by BES is discussed.Comment: 4pages, no figure, PTPTEX, talk at the Yukawa International Seminar (YKIS2006), "New frontiers in QCD", Kyoto, Japa

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