111 research outputs found

    Electroweak parameters of the z0 resonance and the standard model

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    Contains fulltext : 124399.pdf (publisher's version ) (Open Access

    SEARCH FOR HEAVY CHARGED SCALARS IN Z0 DECAYS

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    A comparison of jet production rates on the Z0 resonance to perturbative QCD

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    The reaction e+ e- ---> gamma gamma (gamma) at Z0 energies

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    The total and differential cross-sections for the reaction e+e- → γγ(γ) are measured at centre of mass energies around 91 GeV using an integrated luminosity of 4.7 pb-1. The aggreement with QED prediction is good. Consequently there is no evidence for non-standard channels which would have the same experimental signature. The lower limits on the QED cuttoff parameters are Λ+ > 113 GeV and Λ- > 95 GeV. An upper limit on the effective coupling between a possible excited electron and the gamma is derived. At 95% confidence level the branching ratios for Z0 decay into π0γ, ηψ and γγγ are below 1.5 × 10-4, 2.8 × 10-4 and 1.4 × 10-4 respectively.0info:eu-repo/semantics/publishe

    A study of intermittency in hadronic Z0 decays

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    Search for the t and b′ quarks in hadronic decays of the Z0 boson

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    [Abstract

    Expression of interest by the Solenoidal Detector Collaboration to construct and operate a detector at the Superconducting Super Collider

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    CHARGED KAON PRODUCTION IN TAU-DECAYS AT LEP

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    PRODUCTION-RATE AND DECAY LIFETIME MEASUREMENTS OF B(S)0 MESONS AT LEP USING D(S) AND PHI MESONS

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