Triquark correlations and pentaquarks in a QCD sum rule approach
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Triquark correlations and pentaquarks in a QCD sum rule approach

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Triquark correlations and pentaquarks in a QCD sum rule approach

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Lee, Hee-Jung; Kochelev, Nikolai; Vento Torres, Vicente
Aquest document és un/a article, creat/da en: 2005
The role of quark correlations in the description of hadron dynamics in many domains of physics, from low energy dynamics to very hot(dense) systems, is being appreciated. Strong correlations of two quarks (diquark) have been widely investigated in this respect. Recently, we have proposed a dynamical scheme to describe the Θ+ pentaquark in which also three quark correlations (triquark) were instrumental in producing a low mass exotic state. We perform a study, within the QCD sum rule approach including OPE and direct instanton contributions, of triquark correlations and obtain two quasi-bound light uds¯ color quark clusters of 800 MeV and 930 MeV respectively.

    Lee, Hee-Jung Kochelev, Nikolai Vento Torres, Vicente 2005 Triquark correlations and pentaquarks in a QCD sum rule approach Physics Letters B 610 1-2 50 60
http://dx.doi.org/10.1016/j.phystetb.2005.01.081
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