Pentaquark from QCD sum rules: consequences of the diquark approach

Details Pentaquark from QCD sum rules: consequences of the diquark approach Pentaquark from QCD sum rules: consequences of the diquark approach

2004-08-03

arxiv.org/abs/hep-ph/0408032v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, talk given at the International QCD Conference, Montpellier, July 2004

Scientific paper

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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