Inclusive production of pi0, eta, eta-prime (958), K0(S) and lambda in two jet and three jet events from hadronic Z decays

The ALEPH collaboration Barate, R. ; Decamp, D. ; Ghez, Philippe ; et al.
Eur.Phys.J. C16 (2000) 613, 2000.
Inspire Record 507531 DOI 10.17182/hepdata.49106
25 data tables

Inclusive cross section for PI0 production in hadronic events.

Inclusive cross section for ETA production in hadronic events.

Inclusive cross section for ETAPRIME production in hadronic events.

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A Study of parton fragmentation in hadronic Z0 decays using Lambda anti-Lambda correlations

The OPAL collaboration Abbiendi, G. ; Ackerstaff, K. ; Alexander, G. ; et al.
Eur.Phys.J. C13 (2000) 185-195, 2000.
Inspire Record 474010 DOI 10.17182/hepdata.49312

The correlated production of Lambda and Lambdabar baryons has been studied using 4.3 million multihadronic Zo decays recorded with the OPAL detector at LEP. Di-lambda pairs were investigated in the full data sample and for the first time also in 2-jet and 3-jet events selected with the k_t algorithm. The distributions of rapidity differences from correlated Lambda-Lambdabar pairs exhibit short-range, local correlations and prove to be a sensitive tool to test models, particularly for 2-jet events. The JETSET model describes the data best but some extra parameter tuning is needed to improve agreement with the experimental results in the rates and the rapidity spectra simultaneously. The recently developed modification of JETSET, the MOdified Popcorn Scenarium (MOPS), and also HERWIG do not give satisfactory results. This study of di-lambda production in 2- and 3-jet events supports the short-range compensation of quantum numbers.

5 data tables

Average multipicity of LAMBDA pairs in hadronic events.

Average multipicity of LAMBDA pairs in 2-Jet events.

Average multipicity of LAMBDA pairs in 3-Jet events.

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A Model independent measurement of quark and gluon jet properties and differences

The OPAL collaboration Akers, R. ; Alexander, G. ; Allison, John ; et al.
Z.Phys. C68 (1995) 179-202, 1995.
Inspire Record 396179 DOI 10.17182/hepdata.47862
3 data tables

THETA is the angle between hadron and jet's axis. CONST is the parameter used in jet's definition (see text).

CONST is the parameter used in jet's definition (see text).

CONST is the parameter used in jet's definition (see text).


A Study of mean subjet multiplicities in two and three jet hadronic Z0 decays

The OPAL collaboration Akers, R. ; Alexander, G. ; Allison, John ; et al.
Z.Phys. C63 (1994) 363-376, 1994.
Inspire Record 372997 DOI 10.17182/hepdata.48236
4 data tables

Ratio of multiplicities of sub-jets from 3 and 2 jet samples. Data are corrected to the hadron level and have combined statistical and systematic errors.

Sub-jet multiplicity for 3 jet sample. Data corrected to the hadron level and have combined statistical and systematic errors.

Sub-jet multiplicity for 2 jet sample. Data corrected to the hadron level and have combined statistical and systematic errors.

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QCD studies using a cone based jet finding algorithm for $e^{+} e^{-}$ collisions at LEP

The OPAL collaboration Akers, R. ; Alexander, G. ; Allison, John ; et al.
Z.Phys. C63 (1994) 197-212, 1994.
Inspire Record 373000 DOI 10.17182/hepdata.48238
16 data tables

Measured 2 jet production rate as a function of EPSILON, the minimum energy of a jet for a fixed cone radius R = 0.7 radians.

Measured 2 jet production rate as a function of R, the jet cone radius, for a fixed value of the minimum jet energy, EPSILON, of 7 GeV.

Measured 3 jet production rate as a function of EPSILON, the minimum energy of a jet for a fixed cone radius R = 0.7 radians.

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Charged particle multiplicity distributions for fixed number of jets in Z0 hadronic decays

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adami, F. ; et al.
Z.Phys. C56 (1992) 63-76, 1992.
Inspire Record 334948 DOI 10.17182/hepdata.14533
3 data tables

Corrected charged particle multiplicity for jet resolution parameter YCUT = 0.01.

Corrected charged particle multiplicity for jet resolution parameter YCUT = 0.02.

Corrected charged particle multiplicity for jet resolution parameter YCUT = 0.04.


A Study of the recombination scheme dependence of jet production rates and of alpha-s (m(Z0)) in hadronic Z0 decays

The OPAL collaboration Akrawy, M.Z. ; Alexander, G. ; Allison, John ; et al.
Z.Phys. C49 (1991) 375-384, 1991.
Inspire Record 299833 DOI 10.17182/hepdata.15085
9 data tables

Jet production rates using the E0 recombination scheme.

Jet production rates using the E recombination scheme.

Jet production rates using the p0 recombination scheme.

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A Study of jet rates and measurement of alpha-s at the Z0 resonance

Lauber, Jan A. ;
PhD Thesis, 1993.
Inspire Record 353248 DOI 10.17182/hepdata.18664
9 data tables

Jet production rates using the JADE recombination scheme.

Jet production rates using the DURHAM recombination scheme.

Jet production rates using the E recombination scheme.

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A Global determination of $\alpha^- s$ (M(z0) ) at LEP

The OPAL collaboration Acton, P.D. ; Alexander, G. ; Allison, John ; et al.
Z.Phys. C55 (1992) 1-24, 1992.
Inspire Record 333079 DOI 10.17182/hepdata.14606
16 data tables

Differential jet mass distribution for the heavier jet using method T. The data are corrected for the finite acceptance and resolution of the detector and for initial state photon radiation.

Differential jet mass distribution for the jet mass difference using methodT. The data are corrected for the finite acceptance and resolution of the detec tor and for initial state photon radiation.

Differential jet mass distribution for the heavier jet using method M. The data are corrected for the finite acceptance and resolution of the detector and for initial state photon radiation.

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Determination of alpha-s from jet multiplicities measured on the Z0 resonance

The L3 collaboration Adeva, B. ; Adriani, O. ; Aguilar-Benitez, M. ; et al.
Phys.Lett. B248 (1990) 464-472, 1990.
Inspire Record 298078 DOI 10.17182/hepdata.29651
2 data tables

Errors are combined statistical and systematic uncertainties.

No description provided.


Experimental Investigation of the Energy Dependence of the Strong Coupling Strength

The JADE collaboration Bethke, S. ; Allison, John ; Ambrus, K. ; et al.
Phys.Lett. B213 (1988) 235-241, 1988.
Inspire Record 263579 DOI 10.17182/hepdata.29894
4 data tables

No description provided.

No description provided.

No description provided.

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Experimental Evidence for the Nonabelian Nature of {QCD}

The AMY collaboration Park, I.H. ; Schnetzer, S. ; Green, J. ; et al.
Phys.Rev.Lett. 62 (1989) 1713, 1989.
Inspire Record 276619 DOI 10.17182/hepdata.20045
2 data tables

No description provided.

No description provided.


Comparison of the Particle Flow in $q \bar{q} \gamma$ and $q \bar{q} g$ Events From $e^+ e^-$ Annihilations at {PETRA}

The JADE collaboration Ould Saada, F. ; Allison, John ; Ambrus, K. ; et al.
Z.Phys. C39 (1988) 1, 1988.
Inspire Record 260834 DOI 10.17182/hepdata.15623
1 data table

Data requested from authors.


A Comparison of the Particle Flow in Three Jet and Radiative Two Jet Events From $e^+ e^-$ Annihilation at $e$({CM}) = 29-{GeV}

Sheldon, P.D. ; Trilling, G. ; Petersen, A. ; et al.
Phys.Rev.Lett. 57 (1986) 1398, 1986.
Inspire Record 230941 DOI 10.17182/hepdata.20219
4 data tables

No description provided.

No description provided.

No description provided.

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Comparison of the particle flow in $q\bar{q}g$ and $q\bar{q}\gamma$ events in $e^+e^-$ annihilation

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Avery, R.E. ; et al.
Phys.Rev.Lett. 57 (1986) 945, 1986.
Inspire Record 230224 DOI 10.17182/hepdata.38183
2 data tables

No description provided.

No description provided.


Comparison of Charged Particle Multiplicities in Quark and Gluon Jets Produced in $e^+ e^-$ Annihilation at 29-{GeV}

Derrick, M. ; Gan, K.K. ; Kooijman, P. ; et al.
Phys.Lett. B165 (1985) 449-453, 1985.
Inspire Record 17442 DOI 10.17182/hepdata.30286
1 data table

Mean jet charged particle interpretations for gluon and quark jets as described above.


Tests of models for parton fragmentation using three jet events in $e^+e^-$ annihiliation at $\sqrt{s} = 29$ GeV

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Bakken, J.A. ; et al.
Phys.Rev.Lett. 54 (1985) 270, 1985.
Inspire Record 205871 DOI 10.17182/hepdata.20358
1 data table

No description provided.