AVERAGE PARTICLE MULTIPLICITIES IN HADRONIC ${{\boldsymbol Z}}$ DECAY

Summed over particle and antiparticle, when appropriate.

$\langle{}\boldsymbol N_{{{\boldsymbol J / \psi}{(1S)}}}\rangle{}$ INSPIRE search

VALUE DOCUMENT ID TECN  COMMENT
$0.0056$ $\pm0.0003$ $\pm0.0004$ 1
ALEXANDER
1996B
OPAL ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $91.2$ GeV
1  ALEXANDER 1996B identify ${{\mathit J / \psi}{(1S)}}$ from the decays into lepton pairs.
  References:
ALEXANDER 1996B
ZPHY C70 197 ${{\mathit J / \psi}}$ and ${{\mathit \psi}^{\,'}}$ Production in Hadronic ${{\mathit Z}^{0}}$ Decays