RELATIVISTIC FIVE-QUARK EQUATIONS AND u, d-PENTAQUARK SPECTROSCOPY
نویسندگان
چکیده
منابع مشابه
Constituent quark models and pentaquark baryons
We discuss certain general features of the pentaquark picture for the θ, its 10F partner, Ξ3/2, and possible heavy quark analogues. Models employing spin-dependent interactions based on either effective Goldstone boson exchange or effective color magnetic exchange are also used to shed light on possible corrections to the Jaffe-Wilczek and KarlinerLipkin scenarios. Some model-dependent features...
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We analyze the existence of the exotic Θ from the perspective of instanton induced quark dynamics. The ’t Hooft interaction gives strong attraction in specific channels of the triquark uds̄ and diquark ud configurations. In particular it leads to a light uds̄ triquark cluster, with the mass around 750 MeV, in the I = 0, S = 1/2 and color 3 configuration, and a light ud-diquark configuration, with...
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The cross section for U+ production from the reaction gp→p+K−U+, which was observed in the CLAS experiment at the Jefferson National Laboratory, is evaluated in a hadronic model that includes couplings of U+ to both KN and K*N. With their coupling constants determined from the empirical pNNs1710d and rNNs1710d coupling constants using the SU(3) symmetry, the cross section for this reaction has ...
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According to QCD, there exists a broken dynamical supersymmetry between an antiquark and a diquark. This supersymmetry can be used to relate the mass of a pentaquark to the mass of an antibaryon by replacing two antiquarks in an antibaryon by two diquarks to form a pentaquark. Using this technique, we find that the mass of an exotic pentaquark with strangeness plus 1 is greater than 1.74 GeV, o...
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A large number of experiments now appear to confirm the existence of the exotic, strangeness +1 θ baryon. The I = 3/2 exotic Ξ3/2 signal observed by NA49 remains to be confirmed (it is not seen by HERA-B, and its compatibility with earlier high statistics Ξ production experiments has also been questioned). Recently, H1 reported evidence for an anti-charmed exotic, though this state was not seen...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics E
سال: 2006
ISSN: 0218-3013,1793-6608
DOI: 10.1142/s0218301306003941