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

Summed over particle and antiparticle, when appropriate.

$\langle{}\mathit N_{{{\mathit \gamma}}}\rangle{}$

INSPIRE   JSON  (beta) PDGID:
S044GAM
VALUE DOCUMENT ID TECN  COMMENT
$20.97$ $\pm0.02$ $\pm1.15$
ACKERSTAFF
1998A
 OPAL ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $91.2$ GeV
References