Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are measured from a sample of 1.3 million Z decays into hadrons and charged leptons taken with the ALEPH detector at LEP. A silicon-tungsten luminosity calorimeter was installed in ALEPH in 1992, permitting the determination of the absolute luminosity to a systematic precision of 0.15% (experimental) and 0.25% (theoretical). This is combined with a better understanding of the hadronic event selection and an improved tau pair selection. Including the ALEPH results of the past three years one obtains \u3c3{/h 0} =(41.60\ub10.16) nb, and R l =20.69\ub10.09. The corresponding number of light neutrino species is N v =2.983\ub10.034. The lepton pair forw...
The properties of the Z resonance are measured on the basis of 190000 Z decays into fermion pairs co...
We report on the measurement of the leptonic and hadronic cross sections and leptonic forward-backwa...
The properties of the Z resonance are measured on the basis of 190000 Z decays into fermion pairs co...
Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are me...
Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are me...
Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are me...
Precise values of theZ resonance cross sections and lepton pair forward-backward asymmetries are mea...
Preliminary values of the Z resonance parameters and lepton pair forward--backward asymmetries are m...
The measurement of the Z resonance parameters and lepton forward-backward asymmetries are presented....
We report on measurements of hadronic and leptonic cross sections and leptonic forward backward asym...
We report on measurements of hadronic and leptonic cross sections and leptonic forward-backward asym...
We report on the measurement of the leptonic and hadronic cross sections and leptonic forward-backwa...
The properties of the Z resonance are measured on the basis of 190000 Z decays into fermion pairs co...
We report on the measurement of the leptonic and hadronic cross sections and leptonic forward-backwa...
The properties of the Z resonance are measured on the basis of 190000 Z decays into fermion pairs co...
Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are me...
Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are me...
Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are me...
Precise values of theZ resonance cross sections and lepton pair forward-backward asymmetries are mea...
Preliminary values of the Z resonance parameters and lepton pair forward--backward asymmetries are m...
The measurement of the Z resonance parameters and lepton forward-backward asymmetries are presented....
We report on measurements of hadronic and leptonic cross sections and leptonic forward backward asym...
We report on measurements of hadronic and leptonic cross sections and leptonic forward-backward asym...
We report on the measurement of the leptonic and hadronic cross sections and leptonic forward-backwa...
The properties of the Z resonance are measured on the basis of 190000 Z decays into fermion pairs co...
We report on the measurement of the leptonic and hadronic cross sections and leptonic forward-backwa...
The properties of the Z resonance are measured on the basis of 190000 Z decays into fermion pairs co...