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

Summed over particle and antiparticle, when appropriate.

$\langle{}\mathit N_{{{\mathit \psi}{(2S)}}}\rangle{}$

INSPIRE   JSON  (beta) PDGID:
S044P2S
VALUE DOCUMENT ID TECN  COMMENT
$0.0023$ $\pm0.0004$ $\pm0.0003$
ALEXANDER
1996B
 OPAL ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $91.2$ GeV
References