Search for the $Θ^+$ in Photoproduction on the Deuteron

Details Search for the $Θ^+$ in Photoproduction on the Deuteron Search for the $Θ^+$ in Photoproduction on the Deuteron

2005-10-25

arxiv.org/abs/hep-ex/0510067v1

Physics

High Energy Physics

High Energy Physics - Experiment

Proceedings of the Asian-Pacific Few Body Conference, Thailand, 2005

Scientific paper

A high-statistics experiment on a deuterium target was performed using a real photon beam with energies up to 3.6 GeV at the CLAS detector of Jefferson Lab. The reaction reported here is for $\gamma d \to p K^- K^+ n$ where the neutron was identified using the missing mass technique. No statistically significant narrow peak in the mass region from 1.5-1.6 GeV was found. An upper limit on the elementary process $\gamma n \to K^- \Theta^+$ was estimated to be about 4-5 nb, using a model-dependent correction for rescattering determined from $\Lambda$(1520) production. Other reactions with less model-dependence are being pursued.

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