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Measurement of B - anti-B mixing at the Z

Research output: Contribution to journalJournal article


  • ALEPH Collaboration
<mark>Journal publication date</mark>1991
<mark>Journal</mark>Physics Letters B
Issue number1-2
Number of pages11
Pages (from-to)236-246
<mark>Original language</mark>English


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.