Title of article
Charged particle multiplicity in e+e−→qq̄
Author/Authors
DELPHI Collaboration، نويسنده , , P Abreu، نويسنده , , W Adam، نويسنده , , T Adye، نويسنده , , I Ajinenko، نويسنده , , G.D. Alekseev، نويسنده , , R Alemany، نويسنده , , P.P. Allport، نويسنده , , S. Almehed، نويسنده , , U Amaldi، نويسنده , , S Amato، نويسنده , , P Andersson، نويسنده , , A Andreazza، نويسنده , , P. Antilogus، نويسنده , , W-D Apel، نويسنده , , Y Arnoud، نويسنده , , B ?sman، نويسنده , , J-E Augustin، نويسنده , , A Augustinus، نويسنده , , P Baillon، نويسنده , , et al.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1998
Pages
14
From page
233
To page
246
Abstract
The data collected by DELPHI in 1996 have been used to measure the average charged particle multiplicities and dispersions in qq̄ events at centre-of-mass energies of s=161 GeV and s=172 GeV, and the average charge multiplicity in WW events at s=172 GeV. The multiplicities in qq̄ events are consistent with the evolution predicted by QCD. The dispersions in the multiplicity distributions are consistent with Koba-Nielsen-Olesen (KNO) scaling. The average multiplicity of charged particles in hadronic W decays has been measured for the first time; its value, 19.23±0.74(stat+syst), is consistent with that expected for an e+e− interaction at a centre-of-mass energy equal to the W mass. The charged particle multiplicity in W decays shows no evidence of effects of colour reconnection between partons from different Wʹs at the present level of statistics.
Journal title
PHYSICS LETTERS B
Serial Year
1998
Journal title
PHYSICS LETTERS B
Record number
909090
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