A measurement of electron-tau universality from decays of intermediate vector bosons at the CERN {Mathematical expression} collider

CERN pp collider collaboration

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    Abstract

    The ratio of branching fractions of the W decaying to τ and e leptons is measured using {Mathematical expression} collisions at {Mathematical expression} GeV. The ratio of the electroweak charged current couplings to the W is then determined to be gτ W/ge W=0.997±0.0 56 (stat.)±0.042 (syst.). The decay mode Z→τ+→τ+ is observed and also found to be consistent with e-τ universality.

    Original languageEnglish
    Pages (from-to)209-218
    Number of pages10
    JournalZeitschrift fuer Physik C. Particles and Fields
    Volume52
    Issue number2
    DOIs
    Publication statusPublished - 1 Jun 1991

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