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Search for the pentaquark candidate $\Theta^+$(1540) in the hyperon beam experiment WA89 (2005)

Abstract
We report on a high-statistics search for the \t1540 resonance in $\Sigma^-$-nucleus collisions at 340 \gevc1 . No evidence for this resonance was found in our data sample which contains 13 millions $K^0_s \to \pi^+\pi^- $ decays above background. For the decay channel $\Theta^+ \to K^0_s p$ and the kinematic range $x_F>$ 0.05 we find the production cross section to be $BR(\Theta^+ \to K^0_s p)\cdot \sigma_0

Publication details
Download http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=aps&id=PhysRevC.72.055201
http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-ex&id=0510013
Repository CERN Document Server (Switzerland)
Keywords Particle Physics - Experimental Results
Language eng