Charged-Particle Multiplicity pp̄ Collisions at √s = 1.8 TeV

CDF Collaboration

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report on a measurement of the mean charged-particle multiplicity of jets in dijet events with dijet masses in the range 80-630 GeV/c2, produced at the Tevatron in pp̄ collisions with √s = 1.8 TeV and recorded by the Collider Detector at Fermilab. The data are fit to perturbative-QCD calculations carried out in the framework of the modified leading log approximation and the hypothesis of local parton-hadron duality. The fit yields values for two parameters in that framework: the ratio of parton multiplicities in gluon and quark jets, γ≡Ng-jet partons/Nq-jet partons = 1.7±0.3, and the ratio of the number of charged hadrons to the number of partons in a jet, Kcharged LPHD≡Ncharged hadrons/Npartons = 0.57±0.11.

Original languageEnglish
Number of pages1
JournalPhysical Review Letters
Volume87
Issue number21
DOIs
Publication statusPublished - 2001 Jan 1

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partons
charged particles
collisions
hadrons
quantum chromodynamics
quarks
detectors
approximation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Charged-Particle Multiplicity pp̄ Collisions at √s = 1.8 TeV. / CDF Collaboration.

In: Physical Review Letters, Vol. 87, No. 21, 01.01.2001.

Research output: Contribution to journalArticle

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title = "Charged-Particle Multiplicity pp̄ Collisions at √s = 1.8 TeV",
abstract = "We report on a measurement of the mean charged-particle multiplicity of jets in dijet events with dijet masses in the range 80-630 GeV/c2, produced at the Tevatron in pp̄ collisions with √s = 1.8 TeV and recorded by the Collider Detector at Fermilab. The data are fit to perturbative-QCD calculations carried out in the framework of the modified leading log approximation and the hypothesis of local parton-hadron duality. The fit yields values for two parameters in that framework: the ratio of parton multiplicities in gluon and quark jets, γ≡Ng-jet partons/Nq-jet partons = 1.7±0.3, and the ratio of the number of charged hadrons to the number of partons in a jet, Kcharged LPHD≡Ncharged hadrons/Npartons = 0.57±0.11.",
author = "{CDF Collaboration} and T. Affolder and H. Akimoto and A. Akopian and Albrow, {M. G.} and P. Amaral and D. Amidei and K. Anikeev and J. Antos and G. Apollinari and Tetsuo Arisawa and A. Artikov and T. Asakawa and W. Ashmanskas and F. Azfar and P. Azzi-Bacchetta and N. Bacchetta and H. Bachacou and S. Bailey and {De Barbaro}, P. and A. Barbaro-Galtieri and Barnes, {V. E.} and Barnett, {B. A.} and S. Baroiant and M. Barone and G. Bauer and F. Bedeschi and S. Belforte and Bell, {W. H.} and G. Bellettini and J. Bellinger and D. Benjamin and J. Bensinger and A. Beretvas and Berge, {J. P.} and J. Berryhill and A. Bhatti and M. Binkley and D. Bisello and M. Bishai and Blair, {R. E.} and C. Blocker and K. Bloom and B. Blumenfeld and Blusk, {S. R.} and A. Bocci and A. Bodek and W. Bokhari and G. Bolla and Y. Bonushkin and D. Bortoletto",
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AU - Affolder, T.

AU - Akimoto, H.

AU - Akopian, A.

AU - Albrow, M. G.

AU - Amaral, P.

AU - Amidei, D.

AU - Anikeev, K.

AU - Antos, J.

AU - Apollinari, G.

AU - Arisawa, Tetsuo

AU - Artikov, A.

AU - Asakawa, T.

AU - Ashmanskas, W.

AU - Azfar, F.

AU - Azzi-Bacchetta, P.

AU - Bacchetta, N.

AU - Bachacou, H.

AU - Bailey, S.

AU - De Barbaro, P.

AU - Barbaro-Galtieri, A.

AU - Barnes, V. E.

AU - Barnett, B. A.

AU - Baroiant, S.

AU - Barone, M.

AU - Bauer, G.

AU - Bedeschi, F.

AU - Belforte, S.

AU - Bell, W. H.

AU - Bellettini, G.

AU - Bellinger, J.

AU - Benjamin, D.

AU - Bensinger, J.

AU - Beretvas, A.

AU - Berge, J. P.

AU - Berryhill, J.

AU - Bhatti, A.

AU - Binkley, M.

AU - Bisello, D.

AU - Bishai, M.

AU - Blair, R. E.

AU - Blocker, C.

AU - Bloom, K.

AU - Blumenfeld, B.

AU - Blusk, S. R.

AU - Bocci, A.

AU - Bodek, A.

AU - Bokhari, W.

AU - Bolla, G.

AU - Bonushkin, Y.

AU - Bortoletto, D.

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N2 - We report on a measurement of the mean charged-particle multiplicity of jets in dijet events with dijet masses in the range 80-630 GeV/c2, produced at the Tevatron in pp̄ collisions with √s = 1.8 TeV and recorded by the Collider Detector at Fermilab. The data are fit to perturbative-QCD calculations carried out in the framework of the modified leading log approximation and the hypothesis of local parton-hadron duality. The fit yields values for two parameters in that framework: the ratio of parton multiplicities in gluon and quark jets, γ≡Ng-jet partons/Nq-jet partons = 1.7±0.3, and the ratio of the number of charged hadrons to the number of partons in a jet, Kcharged LPHD≡Ncharged hadrons/Npartons = 0.57±0.11.

AB - We report on a measurement of the mean charged-particle multiplicity of jets in dijet events with dijet masses in the range 80-630 GeV/c2, produced at the Tevatron in pp̄ collisions with √s = 1.8 TeV and recorded by the Collider Detector at Fermilab. The data are fit to perturbative-QCD calculations carried out in the framework of the modified leading log approximation and the hypothesis of local parton-hadron duality. The fit yields values for two parameters in that framework: the ratio of parton multiplicities in gluon and quark jets, γ≡Ng-jet partons/Nq-jet partons = 1.7±0.3, and the ratio of the number of charged hadrons to the number of partons in a jet, Kcharged LPHD≡Ncharged hadrons/Npartons = 0.57±0.11.

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