3 research outputs found

    MEASUREMENT OF THE MASS AND WIDTH OF THE Z0 PARTICLE FROM MULTI - HADRONIC FINAL STATES PRODUCED IN e+ e- ANNIHILATIONS

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    First measurements of the mass and width of the Z0 performed at the newly commissioned LEP Collider by the DELPHI Collaboration are presented. The measuements are derived from the study of multihadronic final states produced in e+e- annihilations at several energies around the Z0 mass. The values found for the mass and width are M(Z0)=91.06±0.09 (stat) ±0.045 (syst.) GeV and Γ(Z0)=2.42±0.21 (stat.) GeV respectively, froma three-parameter fit to the line shape. A two-parameter fit in the framework of the standard model yields for the number of light neutrino species Nν=2.4±0.4 (stat.) ±0.5 (syst.)0SCOPUS: ar.jinfo:eu-repo/semantics/publishe

    Measurement of the mass and width of the Z0^0-particle from multihadronic final states produced in e+^+e^- annihilation

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    Following a presentation of the role of numbers and measures in the evaluation of scientific journals, adequate statistical and mathematical indicators are described for some traditional "paper" journals in information science and in communication science. These indicators can be used to improve the impact and the audience of these journals. With new electronic journals, it is easier to determine these indicators. The results of the first statistical study dealing with information science electronic journals is presented

    MEASUREMENT OF THE MASS AND WIDTH OF THE Z0-PARTICLE FROM MULTIHADRONIC FINAL-STATES PRODUCED IN E+E- ANNIHILATIONS

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