| AAPPS Bulletin
Vol.13 No.4 August 2003 |
Cover Story
Evidence for an S=+1 Pentaquark Baryon (PDF,204KB)
Takashi Nakano,Osaka University, Japan
abstract---
The evidence for a pentaquark particle Θ+ was first observed
at LEPS at SPring-8, Japan. Three international collaborations
in Russia, US, and Germany quickly confirmed the Θ+ with a mass
of 1540 MeV and a narrow width. They are remarkably consistent
with a theoretical prediction by Diakonov, Petrov, and Polyakov.
Further theoretical and experimental study of the Θ+ are in progress
to understand the nature of hadrons. |
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