F. Abe et al., SEARCH FOR NEW GAUGE BOSONS DECAYING INTO DILEPTONS IN (P)OVER-BAR-P COLLISIONS AT ROOT-S=1.8 TEV, Physical review letters, 79(12), 1997, pp. 2192-2197
We have searched for heavy neutral gauge bosons (Z') in dielectron and
dimuon decay modes using 110 pb(-1) of (p) over bar p collisions at r
oot s = 1.8 TeV collected with the Collider Detector at Fermilab. We.
present a limit on the production cross section times branching ratio
of a Z' boson decaying into dileptons as a function of Z' mass. For ma
ss M-Z' > 600 GeV/c(2), the upper limit is 40 fb at 95% confidence lev
el. We set the lower mass limits of 690, 590, 620, 595, 565, 630, and
600 GeV/c(2) forZ(SM)(l), Z(psi), Z(eta), Z(X), Z(l), Z(LR), and Z(ALR
M), respectively.