Interpretation of the Theta+ as an isotensor pentaquark with weakly decaying partners

Preprint

7 August 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0307019

Abstract

The Theta+(1540), recently observed at LEPS, DIANA and CLAS, is hypothesized to be an isotensor resonance. This implies the existence of a multiplet where the Theta++, Theta+ and Theta0 have isospin-violating strong decays, and the Theta+++ and Theta- have weak decays and so are long-lived. Production mechanisms for these states are discussed. The J^P assignment of the Theta is most likely 1/2^- or 3/2^-.

Keywords

ISOTENSOR PENTAQUARK
ISOTENSOR RESONANCE
ISOSPIN VIOLATING
DECAYING PARTNERS
WEAKLY DECAYING
WEAK DECAYS
THETA

All Related Versions

Version 1, 2003-07-01, ArXiv
Version 2, 2003-08-07, ArXiv
Published version: Physics Letters B, 570 (3-4), 185.

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