Measurement of the production rates of charged hadrons in e+e--annihilation at the Z0

OPAL Collaboration

Research output: Contribution to journalArticlepeer-review

127 Scopus citations


The inclusive production rates of π±, K± and p {Mathematical expression} in Z0 decays have been measured with the OPAL detector at LEP. Using the energy loss measurement in the jet chamber, the momentum range up to the beam energy (45.6 GeV/c) has been covered. Differential cross sections and total particle yields are given. Comparisons of the inclusive momentum spectra and the total rates with predictions of the JETSET and the HERWIG Monte Carlo model are presented. The total single rates are found to be 17.05±0.43 π±, 2.42±0.13 K± and 0.92±0.11 p {Mathematical expression} per hadronic event. Predictions of JETSET for cross sections and total rates agree very well for π±; however, for momenta greater than 4 GeV/c, K± rates are underestimated and {Mathematical expression} rates are overestimated. Combined with data of other particle species there is evidence that the peak positions in the ξ=ln(1/xp) distributions show a different mass dependence for mesons and baryons. However, both JETSET and HERWIG Monte Carlo predictions agree with the observed data.

Original languageEnglish
Pages (from-to)181-195
Number of pages15
JournalEuropean Physical Journal C
Issue number2
StatePublished - 1 Jun 1994
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Measurement of the production rates of charged hadrons in e+e--annihilation at the Z0'. Together they form a unique fingerprint.

Cite this