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Pentaquark from QCD sum rules: consequences of the diquark approach

Markus Eidemuller
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Abstract

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)^2\bar{s} 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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Markus Eidemuller. 2004-08-03. Pentaquark from QCD sum rules: consequences of the diquark approach. https://arxiv.org/abs/hep-ph/0408032

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