Vm. Abazov et al., Search for heavy particles decaying into electron-positron pairs in p(p)over-bar collisions - art. no. 061802, PHYS REV L, 8706(6), 2001, pp. 1802
We present results of searches for technirho (rho (T)), techniomega (omega
(T)), and Z' particles, using the decay channels rho (T), omega (T), Z' -->
e(+)e(-). The search is based on 124.8 pb(-1) of data collected by the DO
detector at the Fermilab Tevatron during 1992-1996. In the absence of a sig
nal, we set 95% C.L. upper limits on the cross sections for the processes p
(p) over bar --> rho (T), omega (T), Z' - e(+)e(-) as a function of the ma
ss of the decaying particle. For certain model parameters, we exclude the e
xistence of degenerate rho (T) and omega (T) states with masses below about
200 GeV. We exclude a Z' with mass below 670 GeV, assuming that it has the
same couplings to fermions as the Z boson.