28 research outputs found

    Search for nonstandard Z0 decays in two particle final states

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    DELPHI results on the Z0 resonance parameters through its hadronic and leptonic decay modes

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

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    A study of intermittency in hadronic Z0 decays

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    SEARCH FOR HEAVY CHARGED SCALARS IN Z0 DECAYS

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    Search for scalar quarks in Z0 decays

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    Charged multiplicity and rapidity distributions in Z0 hadronic decays

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    SEARCH FOR HEAVY CHARGED SCALARS IN Z0 DECAYS

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    A PRECISE MEASUREMENT OF THE Z RESONANCE PARAMETERS THROUGH ITS HADRONIC DECAYS

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    ENERGY ENERGY CORRELATIONS IN HADRONIC FINAL-STATES FROM Z0 DECAYS

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    We have studied the energy-energy angular correlations in hadronic final states from Z0 decay using the DELPHI detector at LEP. From a comparison with Monte Carlo calculations based on the exact second order QCD matrix element and string fragmentation we find that Lambda-MS(5) = 104(-20)+25(stat.)-20(+25)(syst.)-00(+30)(theor.) MeV, which corresponds to alpha-s(91 GeV) = 0.106 +/- 0.003(stat.) +/- 0.003(syst.)-0.000(+0.003)(theor.). The theoretical error stems from different choices for the renormalization scale of alpha-s. In the Monte Carlo simulation the scale of alphA-s as well as the fragmentation parameters have been optimized to described reasonably well as aspects of multihadron production
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