Pentaquark from QCD sum rules: consequences of the diquark approach
Eidemuller, Markus
Original · EN
In this work we investigate the consequences of the Jaffe and Wilczek diquark model in the framework of QCD sum rules. An analysis of the Theta+(1540) as (ud)²s state shows that the mass of the pentaquark is compatible with the experimentally measured value. The mass difference between the Theta+ and the pentaquark with the quantum numbers of the nucleon amounts to 70 MeV and is consistent with the interpretation of the N(1440) as a pentaquark.
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