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

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

2003-12-25

arxiv.org/abs/hep-ph/0312348v4

Phys.Lett. B585 (2004) 91-98; Erratum-ibid. B596 (2004) 317-318

Physics

High Energy Physics

High Energy Physics - Phenomenology

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Scientific paper

10.1016/j.physletb.2004.01.073

We present an analysis of the Beam-Target double polarization asymmetry for
the photoproduction of $\Theta^+$ in $\gamma n\to \Theta^+ K^-$. We show that
this quantity can serve as a filter for the determination of the $\Theta^+$'s
spin-parity assignment near threshold. It is highly selective between $1/2^+$
and $1/2^-$ configurations due to dynamical reasons.

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