Pentaquark and diquark-diquark clustering: a QCD sum rule approach
High Energy Physics - Phenomenology
2009-11-10 v3
Abstract
In this work we study the Theta(1540) in the framework of QCD sum rules based on (ud)^2\bar{s} diquark clustering as suggested by Jaffe and Wilczek. Within errors, 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, consistent with the interpretation of the N(1440) as a pentaquark.
Cite
@article{arxiv.hep-ph/0404126,
title = {Pentaquark and diquark-diquark clustering: a QCD sum rule approach},
author = {Markus Eidemuller},
journal= {arXiv preprint arXiv:hep-ph/0404126},
year = {2009}
}
Comments
10 pages, 3 figures; discussions extended, references added, version to appear in Phys. Lett. B