From the data collected by DELPHI at LEP in autumn 1995, the multiplicity of charged particles at a hadronic energy of 130 GeV has been measured to be [n(ch)] = 23.84 +/- 0.51(stat) +/- 0.52(syst), When compared to lower energy data, the value measured is consistent with the evolution predicted by QCD with corrections at next-to-leading order, for a value alpha(s) (130 GeV) = 0.105 +/- 0.003(stat) +/- 0.008(syst).
Charged particle multiplicity in e(+)e(-) interactions at root s=130 GeV
BIANCHI, Fabrizio;MIGLIORE, Ernesto;ROMERO, Alessandra;
1996-01-01
Abstract
From the data collected by DELPHI at LEP in autumn 1995, the multiplicity of charged particles at a hadronic energy of 130 GeV has been measured to be [n(ch)] = 23.84 +/- 0.51(stat) +/- 0.52(syst), When compared to lower energy data, the value measured is consistent with the evolution predicted by QCD with corrections at next-to-leading order, for a value alpha(s) (130 GeV) = 0.105 +/- 0.003(stat) +/- 0.008(syst).
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