Double polarization asymmetry as a possible filter for Θ+'s parity

We present an analysis of the Beam–Target double polarization asymmetry for the photoproduction of Θ+ in γn→Θ+K−. We show that this quantity can serve as a filter for the determination of the Θ+'s spin-parity assignment near threshold. It is highly selective between 1/2+ and 1/2− configurations...

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Bibliographic Details
Published in:Physics letters. B 2004-04, Vol.585 (1-2), p.91-98
Main Authors: Zhao, Qiang, Al-Khalili, J.S.
Format: Article
Language:English
Subjects:
Electromagnetic processes and properties
Exact sciences and technology
Physics
Specific reactions and phenomenology
The physics of elementary particles and fields
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Summary:We present an analysis of the Beam–Target double polarization asymmetry for the photoproduction of Θ+ in γn→Θ+K−. We show that this quantity can serve as a filter for the determination of the Θ+'s spin-parity assignment near threshold. It is highly selective between 1/2+ and 1/2− configurations due to dynamical reasons.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2004.01.073