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rivet Analysis
Charged-particle multiplicities of quark and gluon jets in e+ e- annihilation at TRISTAN.

The TOPAZ collaboration Nakabayashi, K. ; Yamauchi, M. ; Abe, K. ; et al.
Phys.Lett.B 413 (1997) 447-452, 1997.
Inspire Record 454183 DOI 10.17182/hepdata.28238

Charged-particle multiplicity was studied in e + e − annihilation at s = 57.8 GeV using the TOPAZ detector at TRISTAN. The average multiplicity was 〈 n ch 〉 = 17.64± 0.05(stat.) ± 0.41(syst.). It was found that the multiplicity depends on the thrust ( T ) of an event. From extrapolating this relation to T = 2 3 , the multiplicity for three-fold symmetric events was estimated to be 〈n ch 〉 T = 2 3 = 23.50 −1.45 +1.25 . From this, the multiplicity ratio between gluon- and quark-jet was estimated to be r g q = 1.46 −0.13 +0.09 without any possible bias from jet clustering.

4 data tables
Table 1

No description provided.

Table 2

Multiplicity measured for events with a Thrust of 2/3. These are three-foldsymmetric events.

Table 3

Mean charged particle multiplicity as function of -log(1-THRUST).

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