6533b82efe1ef96bd12928bf

RESEARCH PRODUCT

Pentaquark from QCD sum rules: consequences of the diquark approach

Markus Eidemüller

subject

PhysicsNuclear and High Energy PhysicsParticle physicsQCD sum rulesHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyFOS: Physical sciencesQuantum numberAtomic and Molecular Physics and OpticsPentaquarkInterpretation (model theory)Nuclear physicsDiquarkHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentNucleonNuclear Experiment

description

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.

yearjournalcountryeditionlanguage
2006-02-01
http://arxiv.org/abs/hep-ph/0408032