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Measurement of B - anti-B mixing at the Z

Research output: Contribution to journalJournal article


Journal publication date1991
JournalPhysics Letters B
Journal number1-2
Number of pages11
Original languageEnglish


From more than 175 000 hadronic Z decays observed with the ALEPH detector at LEP, we select 823 events with pairs of leptons in the final state. From these we measure χ, the probability thata b hadron which is observed to decay originated as a hadron. We find χ=0.132−0.026+0.027.