Z → qq―γγ  Decay Mode Summary INSPIRE   PDGID:
S044.46
Mode Fraction (Γi / Γ) Scale Factor/
Conf. Level		 P(MeV/c)  
Γ63 Z → qq―γγ <5.5×10−6 CL= 95%
Note: For mγγ = (60 ±5) GeV.
The following data is related to the above value:
Γ( Z → qq―γγ)/Γtotal
Γ63/Γ
VALUE CL% DOCUMENT ID TECN  COMMENT
<5.5×10−6 95 1
ACTON
1993E
 OPAL Ecmee= 88−94 GeV
1  For mγγ = 60 ±5 GeV.
 References