High Statistics Search for the Theta+(1.54) Pentaquark State

M.J. Longo , R.A. Burnstein , A. Chakravorty , Y.C. Chen , W.S.Choong , K. Clark , E.C. Dukes , C. Durandet

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J. Felix Y. Fu G. Gidal H.R. Gustafson T. Holmstrom M. Huang C. James C.M. Jenkins T. Jones D.M. Kaplan L.M. Lederman N. Leros F. Lopez L.C. Lu W. Luebke K.B. Luk K.S. Nelson H.K. Park J.-P. Perroud D. Rajaram H.A. Rubin J. Volk C.G. White S. White P. Zyla

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classification ✦ hep-ex

keywords thetacandidatesconfidencedatadecaysdistributionevidenceexperiment

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We have searched for Theta+(1.54) -> K0,p decays using data from the 1999 run of the HyperCP experiment at Fermilab. We see no evidence for a narrow peak in the K0,p mass distribution near 1.54 GeV/c among 106,000 K0,p candidates, and obtain an upper limit for the fraction of Theta+(1.54) to K0,p candidates of <0.3% at 90% confidence.

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High Statistics Search for the Theta+(1.54) Pentaquark State

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