Remarks on the parity determination of narrow resonances

Details Remarks on the parity determination of narrow resonances Remarks on the parity determination of narrow resonances

2004-10-21

arxiv.org/abs/hep-ph/0410293v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk presented at PENTAQUARK04 July 20-23, 2004 at SPring-8, Japan

Scientific paper

Recently several proposals were put forward to determine the parity of narrow baryonic resonances, in particular the $\Theta^+$. In these proceedings we will briefly comment on the general problems in this task and then discuss in detail the potential of reactions of the type $\vec N\vec N\to\Theta^+Y$, where $Y$ denotes a hyperon (either $\Sigma$ or $\Lambda$) and the arrows indicate that a polarized initial state is required. Besides reiterating the model--independent properties of this class of reactions we discuss the physics content of some model calculations.

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