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Elusive multiquark spectroscopy

Abstract : A review is presented of past and recent attempts to build multiquark states within current models already describing ordinary mesons and baryons. This includes: coherence in the chromomagnetic interaction, tetraquarks with two heavy quarks, Steiner-tree models of confinement, and hadronic molecules, in particular in the hidden-charm sector. Some emphasis is put on the difficulties encountered when extrapolating toward higher configurations the dynamics of confining forces, starting from the simple case of a quark and an antiquark, or three quarks in a colour singlet.
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Submitted on : Friday, January 29, 2010 - 1:13:50 PM
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J.-M. Richard. Elusive multiquark spectroscopy. IUPAP Conference on Few-Body Problems in Physics, Sep 2009, Bonn, Germany. pp.01015, ⟨10.1051/epjconf/20100301015⟩. ⟨in2p3-00444670v2⟩

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