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

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

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

Authors

Description

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.
4 pages, 4 figures