Showing 2 of 2 results
The hadronic final states observed with the ALEPH detector at LEP in ${\rm e}^ + {\rm e}^-$ annihilation
Mean charged particle multiplicities at different c.m. energies.
XP distribution at c.m. energy 133.0 GeV.
XP distribution at c.m. energy 161.0 GeV.
XP distribution at c.m. energy 172.0 GeV.
XP distribution at c.m. energy 183.0 GeV.
XP distribution at c.m. energy 189.0 GeV.
XP distribution at c.m. energy 196.0 GeV.
XP distribution at c.m. energy 200.0 GeV.
XP distribution at c.m. energy 206.0 GeV.
Peak position in XI distribution for different c.m. energies.
XI distribution at c.m. energy 133.0 GeV.
XI distribution at c.m. energy 161.0 GeV.
XI distribution at c.m. energy 172.0 GeV.
XI distribution at c.m. energy 183.0 GeV.
XI distribution at c.m. energy 189.0 GeV.
XI distribution at c.m. energy 196.0 GeV.
XI distribution at c.m. energy 200.0 GeV.
XI distribution at c.m. energy 206.0 GeV.
XE distribution at c.m. energy 133.0 GeV.
XE distribution at c.m. energy 161.0 GeV.
XE distribution at c.m. energy 172.0 GeV.
XE distribution at c.m. energy 183.0 GeV.
XE distribution at c.m. energy 189.0 GeV.
XE distribution at c.m. energy 196.0 GeV.
XE distribution at c.m. energy 200.0 GeV.
XE distribution at c.m. energy 206.0 GeV.
PTIN distribution at c.m. energy 133.0 GeV.
PTIN distribution at c.m. energy 161.0 GeV.
PTIN distribution at c.m. energy 172.0 GeV.
PTIN distribution at c.m. energy 183.0 GeV.
PTIN distribution at c.m. energy 189.0 GeV.
PTIN distribution at c.m. energy 196.0 GeV.
PTIN distribution at c.m. energy 200.0 GeV.
PTIN distribution at c.m. energy 206.0 GeV.
PTOUT distribution at c.m. energy 206.0 GeV.
RAPIDITY W.R.T THRUST AXIS distribution at c.m. energy 133.0 GeV.
RAPIDITY W.R.T THRUST AXIS distribution at c.m. energy 161.0 GeV.
RAPIDITY W.R.T THRUST AXIS distribution at c.m. energy 172.0 GeV.
RAPIDITY W.R.T THRUST AXIS distribution at c.m. energy 183.0 GeV.
RAPIDITY W.R.T THRUST AXIS distribution at c.m. energy 189.0 GeV.
RAPIDITY W.R.T THRUST AXIS distribution at c.m. energy 196.0 GeV.
RAPIDITY W.R.T THRUST AXIS distribution at c.m. energy 200.0 GeV.
RAPIDITY W.R.T THRUST AXIS distribution at c.m. energy 206.0 GeV.
RAPIDITY W.R.T. SPHERICITY AXIS distribution at c.m. energy 133.0 GeV.
RAPIDITY W.R.T. SPHERICITY AXIS distribution at c.m. energy 161.0 GeV.
RAPIDITY W.R.T. SPHERICITY AXIS distribution at c.m. energy 172.0 GeV.
RAPIDITY W.R.T. SPHERICITY AXIS distribution at c.m. energy 183.0 GeV.
RAPIDITY W.R.T. SPHERICITY AXIS distribution at c.m. energy 189.0 GeV.
RAPIDITY W.R.T. SPHERICITY AXIS distribution at c.m. energy 196.0 GeV.
RAPIDITY W.R.T. SPHERICITY AXIS distribution at c.m. energy 200.0 GeV.
RAPIDITY W.R.T. SPHERICITY AXIS distribution at c.m. energy 206.0 GeV.
Combined results for ALPHAS.
Event shape means.
THRUST distribution at c.m. energy 91.20 GeV.
1-THRUST distribution at c.m. energy 133.00 GeV.
1-THRUST distribution at c.m. energy 161.00 GeV.
1-THRUST distribution at c.m. energy 172.00 GeV.
1-THRUST distribution at c.m. energy 183.00 GeV.
1-THRUST distribution at c.m. energy 189.00 GeV.
1-THRUST distribution at c.m. energy 200.00 GeV.
1-THRUST distribution at c.m. energy 206.00 GeV.
Heavy Jet Mass (RHO) distribution at c.m. energy 91.20 GeV.
Heavy Jet Mass (RHO) distribution at c.m. energy 133.00 GeV.
Heavy Jet Mass (RHO) distribution at c.m. energy 161.00 GeV.
Heavy Jet Mass (RHO) distribution at c.m. energy 172.00 GeV.
Heavy Jet Mass (RHO) distribution at c.m. energy 183.00 GeV.
Heavy Jet Mass (RHO) distribution at c.m. energy 189.00 GeV.
Heavy Jet Mass (RHO) distribution at c.m. energy 200.00 GeV.
Heavy Jet Mass (RHO) distribution at c.m. energy 206.00 GeV.
Total jet broadening distribution at c.m. energy 91.20 GeV.
Total jet broadening distribution at c.m. energy 133.00 GeV.
Total jet broadening distribution at c.m. energy 161.00 GeV.
Total jet broadening distribution at c.m. energy 172.00 GeV.
Total jet broadening distribution at c.m. energy 183.00 GeV.
Total jet broadening distribution at c.m. energy 189.00 GeV.
Total jet broadening distribution at c.m. energy 200.00 GeV.
Total jet broadening distribution at c.m. energy 206.00 GeV.
Wide jet broadening distribution at c.m. energy 91.20 GeV.
Wide jet broadening distribution at c.m. energy 133.00 GeV.
Wide jet broadening distribution at c.m. energy 161.00 GeV.
Wide jet broadening distribution at c.m. energy 172.00 GeV.
Wide jet broadening distribution at c.m. energy 183.00 GeV.
Wide jet broadening distribution at c.m. energy 189.00 GeV.
Wide jet broadening distribution at c.m. energy 200.00 GeV.
Wide jet broadening distribution at c.m. energy 206.00 GeV.
C-PARAMETER distribution at c.m. energy 91.20 GeV.
C-PARAMETER distribution at c.m. energy 133.00 GeV.
C-PARAMETER distribution at c.m. energy 161.00 GeV.
C-PARAMETER distribution at c.m. energy 172.00 GeV.
C-PARAMETER distribution at c.m. energy 183.00 GeV.
C-PARAMETER distribution at c.m. energy 189.00 GeV.
C-PARAMETER distribution at c.m. energy 200.00 GeV.
C-PARAMETER distribution at c.m. energy 206.00 GeV.
Thrust Major distribution at c.m. energy 91.20 GeV.
Thrust Major distribution at c.m. energy 133.00 GeV.
Thrust Major distribution at c.m. energy 161.00 GeV.
Thrust Major distribution at c.m. energy 172.00 GeV.
Thrust Major distribution at c.m. energy 183.00 GeV.
Thrust Major distribution at c.m. energy 189.00 GeV.
Thrust Major distribution at c.m. energy 200.00 GeV.
Thrust Major distribution at c.m. energy 206.00 GeV.
Thrust Minor distribution at c.m. energy 91.20 GeV.
Thrust Minor distribution at c.m. energy 133.00 GeV.
Thrust Minor distribution at c.m. energy 161.00 GeV.
Thrust Minor distribution at c.m. energy 172.00 GeV.
Thrust Minor distribution at c.m. energy 183.00 GeV.
Thrust Minor distribution at c.m. energy 189.00 GeV.
Thrust Minor distribution at c.m. energy 200.00 GeV.
Thrust Minor distribution at c.m. energy 206.00 GeV.
Jet Mass Difference distribution at c.m. energy 91.20 GeV.
Jet Mass Difference distribution at c.m. energy 133.00 GeV.
Jet Mass Difference distribution at c.m. energy 161.00 GeV.
Jet Mass Difference distribution at c.m. energy 172.00 GeV.
Jet Mass Difference distribution at c.m. energy 183.00 GeV.
Jet Mass Difference distribution at c.m. energy 189.00 GeV.
Jet Mass Difference distribution at c.m. energy 200.00 GeV.
Jet Mass Difference distribution at c.m. energy 206.00 GeV.
Aplanarity distribution at c.m. energy 91.20 GeV.
Aplanarity distribution at c.m. energy 133.00 GeV.
Aplanarity distribution at c.m. energy 161.00 GeV.
Aplanarity distribution at c.m. energy 172.00 GeV.
Aplanarity distribution at c.m. energy 183.00 GeV.
Aplanarity distribution at c.m. energy 189.00 GeV.
Aplanarity distribution at c.m. energy 200.00 GeV.
Aplanarity distribution at c.m. energy 206.00 GeV.
Planarity distribution at c.m. energy 133.00 GeV.
Planarity distribution at c.m. energy 161.00 GeV.
Planarity distribution at c.m. energy 172.00 GeV.
Planarity distribution at c.m. energy 183.00 GeV.
Planarity distribution at c.m. energy 189.00 GeV.
Planarity distribution at c.m. energy 200.00 GeV.
Planarity distribution at c.m. energy 206.00 GeV.
Oblateness distribution at c.m. energy 91.20 GeV.
Oblateness distribution at c.m. energy 133.00 GeV.
Oblateness distribution at c.m. energy 161.00 GeV.
Oblateness distribution at c.m. energy 172.00 GeV.
Oblateness distribution at c.m. energy 183.00 GeV.
Oblateness distribution at c.m. energy 189.00 GeV.
Oblateness distribution at c.m. energy 200.00 GeV.
Oblateness distribution at c.m. energy 206.00 GeV.
Sphericity distribution at c.m. energy 91.20 GeV.
Sphericity distribution at c.m. energy 133.00 GeV.
Sphericity distribution at c.m. energy 161.00 GeV.
Sphericity distribution at c.m. energy 172.00 GeV.
Sphericity distribution at c.m. energy 183.00 GeV.
Sphericity distribution at c.m. energy 189.00 GeV.
Sphericity distribution at c.m. energy 200.00 GeV.
Sphericity distribution at c.m. energy 206.00 GeV.
LN(Y12) distribution at c.m. energy 91.20 GeV.
LN(Y12) distribution at c.m. energy 133.00 GeV.
LN(Y12) distribution at c.m. energy 161.00 GeV.
LN(Y12) distribution at c.m. energy 172.00 GeV.
LN(Y12) distribution at c.m. energy 183.00 GeV.
LN(Y12) distribution at c.m. energy 189.00 GeV.
LN(Y12) distribution at c.m. energy 200.00 GeV.
LN(Y12) distribution at c.m. energy 206.00 GeV.
LN(Y23) distribution at c.m. energy 91.20 GeV.
LN(Y23) distribution at c.m. energy 133.00 GeV.
LN(Y23) distribution at c.m. energy 161.00 GeV.
LN(Y23) distribution at c.m. energy 172.00 GeV.
LN(Y23) distribution at c.m. energy 183.00 GeV.
LN(Y23) distribution at c.m. energy 189.00 GeV.
LN(Y23) distribution at c.m. energy 200.00 GeV.
LN(Y23) distribution at c.m. energy 206.00 GeV.
LN(Y34) distribution at c.m. energy 91.20 GeV.
LN(Y34) distribution at c.m. energy 133.00 GeV.
LN(Y34) distribution at c.m. energy 161.00 GeV.
LN(Y34) distribution at c.m. energy 172.00 GeV.
LN(Y34) distribution at c.m. energy 183.00 GeV.
LN(Y34) distribution at c.m. energy 189.00 GeV.
LN(Y34) distribution at c.m. energy 200.00 GeV.
LN(Y34) distribution at c.m. energy 206.00 GeV.
LN(Y45) distribution at c.m. energy 91.20 GeV.
LN(Y45) distribution at c.m. energy 133.00 GeV.
LN(Y45) distribution at c.m. energy 161.00 GeV.
LN(Y45) distribution at c.m. energy 172.00 GeV.
LN(Y45) distribution at c.m. energy 183.00 GeV.
LN(Y45) distribution at c.m. energy 189.00 GeV.
LN(Y45) distribution at c.m. energy 206.00 GeV.
LN(Y56) distribution at c.m. energy 91.20 GeV.
LN(Y56) distribution at c.m. energy 133.00 GeV.
LN(Y56) distribution at c.m. energy 161.00 GeV.
LN(Y56) distribution at c.m. energy 172.00 GeV.
LN(Y56) distribution at c.m. energy 183.00 GeV.
LN(Y56) distribution at c.m. energy 189.00 GeV.
LN(Y56) distribution at c.m. energy 206.00 GeV.
1-jet fraction at c.m. energy 91.20 GeV.
1-jet fraction at c.m. energy 133.00 GeV.
1-jet fraction at c.m. energy 161.00 GeV.
1-jet fraction at c.m. energy 172.00 GeV.
1-jet fraction at c.m. energy 183.00 GeV.
1-jet fraction at c.m. energy 189.00 GeV.
1-jet fraction at c.m. energy 200.00 GeV.
1-jet fraction at c.m. energy 206.00 GeV.
2-jet fraction at c.m. energy 91.20 GeV.
2-jet fraction at c.m. energy 133.00 GeV.
2-jet fraction at c.m. energy 161.00 GeV.
2-jet fraction at c.m. energy 172.00 GeV.
2-jet fraction at c.m. energy 183.00 GeV.
2-jet fraction at c.m. energy 189.00 GeV.
2-jet fraction at c.m. energy 200.00 GeV.
2-jet fraction at c.m. energy 206.00 GeV.
3-jet fraction at c.m. energy 91.20 GeV.
3-jet fraction at c.m. energy 133.00 GeV.
3-jet fraction at c.m. energy 161.00 GeV.
3-jet fraction at c.m. energy 172.00 GeV.
3-jet fraction at c.m. energy 183.00 GeV.
3-jet fraction at c.m. energy 189.00 GeV.
3-jet fraction at c.m. energy 200.00 GeV.
3-jet fraction at c.m. energy 206.00 GeV.
4-jet fraction at c.m. energy 91.20 GeV.
4-jet fraction at c.m. energy 133.00 GeV.
4-jet fraction at c.m. energy 161.00 GeV.
4-jet fraction at c.m. energy 172.00 GeV.
4-jet fraction at c.m. energy 183.00 GeV.
4-jet fraction at c.m. energy 189.00 GeV.
4-jet fraction at c.m. energy 200.00 GeV.
4-jet fraction at c.m. energy 206.00 GeV.
5-jet fraction at c.m. energy 91.20 GeV.
5-jet fraction at c.m. energy 133.00 GeV.
5-jet fraction at c.m. energy 161.00 GeV.
5-jet fraction at c.m. energy 172.00 GeV.
5-jet fraction at c.m. energy 183.00 GeV.
5-jet fraction at c.m. energy 189.00 GeV.
5-jet fraction at c.m. energy 200.00 GeV.
5-jet fraction at c.m. energy 206.00 GeV.
>=6-jet fraction at c.m. energy 91.20 GeV.
>=6-jet fraction at c.m. energy 133.00 GeV.
>=6-jet fraction at c.m. energy 161.00 GeV.
>=6-jet fraction at c.m. energy 172.00 GeV.
>=6-jet fraction at c.m. energy 183.00 GeV.
>=6-jet fraction at c.m. energy 189.00 GeV.
>=6-jet fraction at c.m. energy 200.00 GeV.
>=6-jet fraction at c.m. energy 206.00 GeV.
We have studied hadronic events from e+e- annihilation data at centre-of-mass energies of sqrt{s}=172, 183 and 189 GeV. The total integrated luminosity of the three samples, measured with the OPAL detector, corresponds to 250 pb^-1. We present distributions of event shape variables, charged particle multiplicity and momentum, measured separately in the three data samples. From these we extract measurements of the strong coupling alpha_s, the mean charged particle multiplicity <nch> and the peak position xi_0 in the xi_p=ln(1/x_p) distribution. In general the data are described well by analytic QCD calculations and Monte Carlo models. Our measured values of alpha_s, <nch> and xi_0 are consistent with previous determinations at sqrt{s}=MZ.
Distribution of Thrust.
Distribution of Thrust Major.
Distribution of Thrust Minor.
Distribution of Aplanarity.
Distribution of Oblateness.
Distribution of the C-parameter.
Distribution of Heavy Jet Mass.
Distribution of Sphericity.
Distribution of Total Jet Broadening.
Distribution of Wide Jet Broadening.
Distribution of the Transition value between 2- and 3-jets, Y23.
Weighted mean values of ALPHAS derived from the six event shape distribution using order (alpha**2) +NLLA QCD calculation with x(mu)=1 and the ln(R)-matching scheme. Results are also given evolved to M(Z0). The 187 GeV entry corresponds to the luminosity weighted mean c.m. energy.
Charged particle multiplicity (in percent).
Mean values of the charged particle multiplicity and higher order moments. D is defined as SQRT(MEAN(MULT)-MEAN(MULT))**2. C2 is defined as MEAN(MULT**2)/MEAN(MULT)**2. R2 is defined as MEAN(MULT(MULT-1))/MEAN(MULT)**2.
Measured value of the momentum spectra of charged particles (PTIN) in the event plane.
Measured value of the momentum spectra of charged particles (PTOUT) out of the event plane.
Measured value of the rapidity (YRAP).
Measured value of the fragmentation functions.
Measured valueS of the 1/LN(X) distribution.
Mean values of the momentum parameter.
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