An improved determination of the ratio of W and Z masses at the CERN pp collider

CERN pp collider collaboration

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    The W and Z bosons masses, mw and mz, are measured using saing samples of W→ev and Z→e+e- decays observed in pp collisions at √s=630 GeV. The ration is found to be mw mz=0.8813±0.0036 ± 0.0019. This gives a value sin2 θw = 0.2234 ± 0.0064 ± 0.0033, and in combination with precise mz measurements from LEP yields mw=80.35±0.33±0.17 GeV. This result is in good agreement with other experiments, and with the standard model for a top quark mass lighter than 250 GeV.

    Original languageEnglish
    Pages (from-to)354-364
    Number of pages11
    JournalPhysics Letters B
    Issue number3
    Publication statusPublished - 13 Feb 1992

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