Search for pentaquark states in Z decays

ALEPH Collaboration, . and Bouhova-Thacker, E. V. and Finch, A. J. and Hughes, G. and Jones, Roger and Smizanska, Ml and Clarke, D. P. and Ellis, G. and Pearson, M. R. and Robertson, N. A. (2004) Search for pentaquark states in Z decays. Physics Letters B, 599 (1-2). pp. 1-16. ISSN 0370-2693

Abstract

Exotic hadrons made of five quarks (pentaquarks) are searched for in hadronic Z decays collected by the ALEPH detector at LEP. No significant signal is observed. At 95% C.L., upper limits are set on the production rates N of such particles and their charge-conjugate state per Z decay