Measurement of the Charged Multiplicities in b, c and Light Quark Events from Z0 Decays

Simple item page
dc.creatorAbe, K.
dc.date1996-08-14
dc.date.accessioned2026-07-07T12:02:14Z
dc.date.available2026-07-07T12:02:14Z
dc.descriptionAverage charged multiplicities have been measured separately in $b$, $c$ and light quark ($u,d,s$) events from $Z^0$ decays measured in the SLD experiment. Impact parameters of charged tracks were used to select enriched samples of $b$ and light quark events, and reconstructed charmed mesons were used to select $c$ quark events. We measured the charged multiplicities: $\bar{n}_{uds} = 20.21 \pm 0.10 (\rm{stat.})\pm 0.22(\rm{syst.})$, $\bar{n}_{c} = 21.28 \pm 0.46(\rm{stat.}) ^{+0.41}_{-0.36}(\rm{syst.})$ $\bar{n}_{b} = 23.14 \pm 0.10(\rm{stat.}) ^{+0.38}_{-0.37}(\rm{syst.})$, from which we derived the differences between the total average charged multiplicities of $c$ or $b$ quark events and light quark events: $Δ\bar{n}_c = 1.07 \pm 0.47(\rm{stat.})^{+0.36}_{-0.30}(\rm{syst.})$ and $Δ\bar{n}_b = 2.93 \pm 0.14(\rm{stat.})^{+0.30}_{-0.29}(\rm{syst.})$. We compared these measurements with those at lower center-of-mass energies and with perturbative QCD predictions. These combined results are in agreement with the QCD expectations and disfavor the hypothesis of flavor-independent fragmentation.
dc.description19 pages LaTex, 4 EPS figures, to appear in Physics Letters B
dc.identifierhttps://arxiv.org/abs/hep-ex/9608008
dc.identifierhttp://arxiv.org/abs/hep-ex/9608008
dc.identifierPhys.Lett.B386:475-485,1996
dc.identifierdoi:10.1016/0370-2693(96)01025-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207367
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMeasurement of the Charged Multiplicities in b, c and Light Quark Events from Z0 Decays
dc.typetext

Files

Collections

arXiv