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Charm counting in b decays

Research output: Contribution to journalJournal article

Published

Journal publication date1996
JournalPhysics Letters B
Journal number3
Volume388
Number of pages11
Pages648-658
Original languageEnglish

Abstract

The inclusive production of charmed particles in decays has been measured from the yield of D0, D+, Ds+ and Λc+ decays in a sample of events with high b purity collected with the ALEPH detector from 1992 to 1995.

From these measurements, adding the charmonia production rate and an estimate of the charmed strange baryon contribution, the average number of charm quarks per b decay is determined to be nc = 1.230 ± 0.036 ± 0.038 ± 0.053, where the uncertainties are due to statistics, systematic effects and branching ratios, respectively.