Date

Subject_areas

Measurement of the longitudinal and transverse cross-section in e+ e- annihilation at s**(1/2) = 35-GeV - 44-GeV

The JADE collaboration Blumenstengel, M. ; Biebel, O. ; Movilla Fernandez, P.A. ; et al.
Phys.Lett. B517 (2001) 37-46, 2001.
Inspire Record 558568 DOI 10.17182/hepdata.37882
3 data tables

The distribution oF Q*COS(THETA) where Q is the charge of the individual hadron and THETA is the polar angle between the direction of the incoming E- beam and the outgoing hadron. The data are corrected for detector effects.

Value of the longitudinal cross section relative to the total cross section.

Value of the strong coupling constant ALPHAS deduced from the measurements. The second DSYS error is the uncertainty on the renormalisation scale.


QCD analyses and determinations of alpha(s) in e+ e- annihilation at energies between 35-GeV and 189-GeV

The JADE OPAL collaborations Pfeifenschneider, P. ; Biebel, O. ; Movilla Fernandez, P.A. ; et al.
Eur.Phys.J. C17 (2000) 19-51, 2000.
Inspire Record 513337 DOI 10.17182/hepdata.12882

We employ data taken by the JADE and OPAL experiments for an integrated QCD study in hadronic e+e- annihilations at c.m.s. energies ranging from 35 GeV through 189 GeV. The study is based on jet-multiplicity related observables. The observables are obtained to high jet resolution scales with the JADE, Durham, Cambridge and cone jet finders, and compared with the predictions of various QCD and Monte Carlo models. The strong coupling strength, alpha_s, is determined at each energy by fits of O(alpha_s^2) calculations, as well as matched O(alpha_s^2) and NLLA predictions, to the data. Matching schemes are compared, and the dependence of the results on the choice of the renormalization scale is investigated. The combination of the results using matched predictions gives alpha_s(MZ)=0.1187+{0.0034}-{0.0019}. The strong coupling is also obtained, at lower precision, from O(alpha_s^2) fits of the c.m.s. energy evolution of some of the observables. A qualitative comparison is made between the data and a recent MLLA prediction for mean jet multiplicities.

80 data tables

Overall result for ALPHAS at the Z0 mass from the combination of the ln R-matching results from the observables evolved using a three-loop running expression. The errors shown are total errors and contain all the statistics and systematics.

Weighted mean for ALPHAS at the Z0 mass determined from the energy evolutions of the mean values of the 2-jet cross sections obtained with the JADE and DURHAMschemes and the 3-jet fraction for the JADE, DURHAM and CAMBRIDGE schemes evaluted at a fixed YCUT.. The errors shown are total errors and contain all the statistics and systematics.

Combined results for ALPHA_S from fits of matched predicitions. The first systematic (DSYS) error is the experimental systematic, the second DSYS error isthe hadronization systematic and the third is the QCD scale error. The values of ALPHAS evolved to the Z0 mass using a three-loop evolution are also given.

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Measurement of the Processes $e^+ e^- \to e^+ e^-$ and $e^+ e^- \to \gamma \gamma$ at {PETRA}

The JADE collaboration Bartel, W. ; Becker, L. ; Bowdery, C. ; et al.
Z.Phys. C19 (1983) 197, 1983.
Inspire Record 191231 DOI 10.17182/hepdata.45206
3 data tables

Total cross sections.

Angular distribution.

Angular distribution.


A Study of event shapes and determinations of alpha-s using data of e+ e- annihilations at s**(1/2) = 22-GeV to 44-GeV

The JADE collaboration Movilla Fernandez, P.A. ; Biebel, O. ; Bethke, S. ; et al.
Eur.Phys.J. C1 (1998) 461-478, 1998.
Inspire Record 447560 DOI 10.17182/hepdata.43431

Data recorded by the JADE experiment at the PETRA e^+e^- collider were used to measure the event shape observables thrust, heavy jet mass, wide and total jet broadening and the differential 2-jet rate in the Durham scheme. For the latter three observables, no experimental results have previously been presented at these energies. The distributions were compared with resummed QCD calulations (O(alpha_s^2)+NLLA), and the strong coupling constant alpha_s(Q) was determined at different energy scales Q=sqrt{s}. The results, \alpha_s(22 GeV) = 0.161 ^{+0.016}_{-0.011}, \alpha_s(35 GeV) = 0.143 ^{+0.011}_{-0.007}, \alpha_s(44 GeV) = 0.137 ^{+0.010}_{-0.007}, are in agreement with previous combined results of PETRA albeit with smaller uncertainties. Together with corresponding data from LEP, the energy dependence of alpha_s is significantly tested and is found to be in good agreement with the QCD expectation. Similarly, mean values of the observables were compared to analytic QCD predictions where hadronisation effects are absorbed in calculable power corrections.

13 data tables

The errors are statistical only.

The last row corresponds to the mean value.

The last row corresponds to the mean value.

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A Measurement of the Electroweak Induced Charge Asymmetry in e+ e- ---> B anti-B

The JADE collaboration Bartel, W. ; Becker, L. ; Bowdery, C. ; et al.
Phys.Lett. B146 (1984) 437-442, 1984.
Inspire Record 203144 DOI 10.17182/hepdata.6565

The forward-backward charge asymmetry for the process e + e − → b b ̄ → μ ± + hadrons has been measured using the JADE detector at PETRA. An asymmetry of (−22.8 ± 6.0 ± 2.5)% was observed at an average center of mass energy of 34.6 GeV. For comparison, an asymmetry of −25.2% is expected on the basis of the standard Glashow-Salam-Weinberg model.

4 data tables

THE VALUE OF CONST HAVE BEEN RESCALED TO DEFINITION I3(Q) = 1/2 BY OPY.

No description provided.

No description provided.

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Measurement of Resonance Productions in the Reactions $\gamma \gamma \to \pi^0 \pi^0$ and $\gamma \gamma \to \pi^0 \eta$

The JADE collaboration Oest, T. ; Olsson, J. ; Allison, John ; et al.
Z.Phys. C47 (1990) 343-352, 1990.
Inspire Record 295180 DOI 10.17182/hepdata.15242
6 data tables

Cross section for ABS(COS(THETA*)) < 0.3.

Cross section under assumptions of spin 2, helicity 2 production.

Cross section under assumption of spin 0 production.

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Measurement of two photon production of rho0 omega

The JADE collaboration Wegner, A. ; Olsson, J. ; Allison, John ; et al.
Z.Phys. C48 (1990) 393-400, 1990.
Inspire Record 297909 DOI 10.17182/hepdata.15125
1 data table

No description provided.


A Measurement of the Weak Axial Couplings of the $b$ and $c$ Quark

The JADE collaboration Elsen, E. ; Allison, John ; Ambrus, K. ; et al.
Z.Phys. C46 (1990) 349-360, 1990.
Inspire Record 282535 DOI 10.17182/hepdata.15241
4 data tables

Results of simultaneous fit to both asymmetries. This table is for the CHARMED quark.

Results of simultaneous fit to both asymmetries. This table is for the BOTTOM quark.

Results for BOTTOM quark asymmetry with c asymmetry constrained to the standard model value.

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A Measurement of the Charmed Quark Asymmetry in $e^+ e^-$ Annihilation

The JADE collaboration Ould-Saada, F. ; Allison, John ; Ambrus, K. ; et al.
Z.Phys. C44 (1989) 567, 1989.
Inspire Record 278937 DOI 10.17182/hepdata.15357
1 data table

CHARMED quark charge asymmetry.


Final Results on $\mu$ and Tau Pair Production by the Jade Collaboration at {PETRA}

The JADE collaboration Hegner, S. ; Naroska, B. ; Schroth, F. ; et al.
Z.Phys. C46 (1990) 547-554, 1990.
Inspire Record 284560 DOI 10.17182/hepdata.15279
2 data tables

No description provided.

No description provided.


A Study of Photon Production in Hadronic Events from e+ e- Annihilation

The JADE collaboration Pitzl, D. ; Allison, John ; Ambrus, K. ; et al.
Z.Phys. C46 (1990) 1-7, 1990.
Inspire Record 282847 DOI 10.17182/hepdata.15300
7 data tables

No description provided.

No description provided.

No description provided.

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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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Measurements of Energy Correlations in $e^+ e^- \to$ Hadrons

The JADE collaboration Bartel, W. ; Becker, L. ; Bowdery, C. ; et al.
Z.Phys. C25 (1984) 231, 1984.
Inspire Record 202784 DOI 10.17182/hepdata.1998
3 data tables

TABLES GIVEN HERE CONTAIN SELF CORRELATION. THIS IS SUBTRACTED IN THE FIGURE.

VALUE OF ASSYMETRY IN CORRELATIONS.

No description provided.


Differential Three Jet Cross-section in $e^+ e^-$ Annihilation and Comparison With Second Order Predictions of {QCD} and Abelian Vector Theory

The JADE collaboration Bartel, W. ; Cords, D. ; Dietrich, G. ; et al.
Phys.Lett. B119 (1982) 239-244, 1982.
Inspire Record 180033 DOI 10.17182/hepdata.30830
2 data tables

FIRST ORDER QCD.

SECOND ORDER QCD.


A Determination of Quark Weak Couplings at {PETRA} Energies

The JADE collaboration Bartel, W. ; Cords, D. ; Dittmann, P. ; et al.
Phys.Lett. B101 (1981) 361, 1981.
Inspire Record 164812 DOI 10.17182/hepdata.31227
2 data tables

No description provided.

WIDTH(Z) = 2.5 GEV WAS ASSUMED. CONST(N=SIN2TW) WAS DETERMINED FROM RATIO(HADRONS/MU). FIRST ORDER QCD.


Observation of Planar Three Jet Events in e+ e- Annihilation and Evidence for Gluon Bremsstrahlung

The JADE collaboration Bartel, W. ; Canzler, T. ; Cords, D. ; et al.
Phys.Lett. B91 (1980) 142-147, 1980.
Inspire Record 143985 DOI 10.17182/hepdata.6339
2 data tables

THRUST AND PLANARITY DISTRIBUTIONS. FINAL (BETTER) THRUST DISTRIBUTIONS WITH DETECTOR CORRECTIONS TO BE PUBLISHED LATER.

No description provided.


Precise Measurement of Total Cross-Sections for the Process e+ e- ---> Multi-Hadrons in the Center-Of-Mass Energy Range Between 12.0-GeV and 36.4-GeV

The JADE collaboration Bartel, W. ; Becker, L. ; Bowdery, C. ; et al.
Phys.Lett. B129 (1983) 145-152, 1983.
Inspire Record 191159 DOI 10.17182/hepdata.6639
2 data tables

ERRORS ARE STATISTICAL PLUS POINT TO POINT SYSTEMATICS. THERE IS AN ADDITIONAL 2.4 PCT OVERALL NORMALIZATION ERROR.

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.


Observation of Charmed Mesons in Photon-photon Collisions

The JADE collaboration Bartel, W. ; Becker, L. ; Felst, R. ; et al.
Phys.Lett. B184 (1987) 288-292, 1987.
Inspire Record 235696 DOI 10.17182/hepdata.30214
1 data table

No description provided.


Tests of the Standard Model in Leptonic Reactions at {PETRA} Energies

The JADE collaboration Bartel, W. ; Becker, L. ; Cords, D. ; et al.
Z.Phys. C30 (1986) 371, 1986.
Inspire Record 222566 DOI 10.17182/hepdata.48419
36 data tables

No description provided.

No description provided.

No description provided.

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EVIDENCE FOR IOTA PRODUCTION IN HIGH-ENERGY e+ e- ANNIHILATION

The JADE collaboration Bartel, W. ; Becker, L. ; Cords, D. ; et al.
No Journal Information, 1985.
Inspire Record 220907 DOI 10.17182/hepdata.45208
1 data table

Background subtracted.


Exclusive Production of Proton Anti-proton Pairs in Photon-photon Collisions

The JADE collaboration Bartel, W. ; Becker, L. ; Cords, D. ; et al.
Phys.Lett. B174 (1986) 350-356, 1986.
Inspire Record 231554 DOI 10.17182/hepdata.30246
2 data tables

Data read off graph.

Data read off graph.


Experimental Study of the Photon Structure Function F(2) in the High $Q^2$ Region

The JADE collaboration Bartel, W. ; Cords, D. ; Dietrich, G. ; et al.
Phys.Lett. B121 (1983) 203-208, 1983.
Inspire Record 180758 DOI 10.17182/hepdata.30781
3 data tables

Data read off graph.

Data read off graph.

Data read off graph.


A Measurement of the Total Cross-section and a Study of Inclusive Muon Production for the Process $e^+ e^- \to$ Hadrons in the Energy Range Between 39.79-{GeV} and 46.78-{GeV}

The JADE collaboration Bartel, W. ; Becker, L. ; Cords, D. ; et al.
Phys.Lett. B160 (1985) 337-342, 1985.
Inspire Record 216799 DOI 10.17182/hepdata.30375
1 data table

Figure 1 also shows energy scan of 'R'.


Experimental Limits on the Strength of Weak Neutral Currents in Lepton Pair Production at {PETRA} Energies

The JADE collaboration Bartel, W. ; Cords, D. ; Dittmann, P. ; et al.
Phys.Lett. B99 (1981) 281-286, 1981.
Inspire Record 156813 DOI 10.17182/hepdata.27121
3 data tables

No description provided.

No description provided.

No description provided.