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Search for pentaquark states in Z decays

Research output: Contribution to journalJournal article


Journal publication date7/10/2004
JournalPhysics Letters B
Journal number1-2
Number of pages16
Original languageEnglish


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