Measurement of the production and muonic decay rate of W and Z bosons in pp¯ collisions at √s =1.8 TeV Academic Article uri icon

abstract

  • An analysis of proton-antiproton collisions at s =1.8 TeV recorded with the Collider Detector at Fermilab (CDF) yields σ(pp̄→WX) B(W→μν)=2.21±0.22 nb and σ(pp̄→ZX)B(Z →μ+μ-)=0.226±0.032 nb. The ratio is Rμ= σWB(W→μν)/σZB(Z→μ+μ-)=9.8±1.2. Combining with previous CDF electron results gives σWB(W→lν)=2. 20±0.20 nb, σZB(Z→l+l-)=0.214±0.023 nb, and Rl=10.0±0.8. We extract the ratios of the coupling constants gμ/ge and gτ/gμ. Using standard model assumptions we deduce the inverse branching ratio B-1(W→lν), the width Γ(W), and a decay-mode-independent lower bound on the top quark mass of 45 GeV/c2 (95% C.L.). © 1992 The American Physical Society.

author list (cited authors)

  • Abe, F., Amidei, D., Apollinari, G., Atac, M., Auchincloss, P., Baden, A. R., ... Zucchelli, S.

citation count

  • 37

publication date

  • July 1992