An Upper limit for Br (Z0 ---> g g g) from symmetric three jet Z0 hadronic decays

Abreu, P.;Cortina Gil, Eduardo;DELPHI Collaboration;et.al.
(1996) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 389, n° 2, p. 405-415 (1996)

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An upper limit for BR(Z0 → 3g) is obtained from a correlation method, which distinguishes statistically between quark and gluon jets by using the difference in their charged particle multiplicity distributions. From the sample of threefold symmetric three-jet events collected by the DELPHI experiment at LEP during 1991–1994, the 95% confidence level upper limit is deduced to be: BR(Z0 → 3g) ≤ 1.6 × 10−2 for the JADE and BR(Z0 → 3g) ≤ 1.5 × 10−2 for the DURHAM jet-finder.
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Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (1996). An Upper limit for Br (Z0 ---> g g g) from symmetric three jet Z0 hadronic decays. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 389(2), 405-415. https://doi.org/10.1016/S0370-2693(96)01450-5 (Original work published 1996)