A Systematic Study of Heavy Exotics in the Large N C Limit Typeset Using Revt E X 1
نویسنده
چکیده
A systematic study of multiquark exotics with one or Nc − 1 heavy quarks in the large Nc limit is presented. By binding a chiral soliton to a heavy meson, either a normal Nc-quark baryon or an exotic (Nc + 2)-quark baryon is obtained. By replacing the heavy quark with Nc−1 heavy antiquarks, exotic (2Nc− 2)-quark and 2Nc-quark mesons are obtained. When Nc = 3, they are just the normal triquark baryon Qqq, the exotic pentaquark baryon Qq̄q̄q̄q̄, tetraquark di-meson Q̄Q̄qq and the hexaquark di-baryon Q̄Q̄q̄q̄q̄q̄ respectively. Their stabilities and decays are also discussed. In particular, it is shown that the “heavy to heavy” semileptonic decays are described by the Isgur–Wise form factors of the normal baryons. Typeset using REVTEX 1
منابع مشابه
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تاریخ انتشار 2008