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Search for heavy particles decaying into electron-positron pairs in pp collisions |
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| Authors: | Abazov V M Abbott B Abdesselam A Abolins M Abramov V Acharya B S Adams D L Adams M Ahmed S N Alexeev G D Alves G A Amos N Anderson E W Baarmand M M Babintsev V V Babukhadia L Bacon T C Baden A Baldin B Balm P W Banerjee S Barberis E Baringer P Barreto J Bartlett J F Bassler U Bauer D Bean A Begel M Belyaev A Beri S B Bernardi G Bertram I Besson A Beuselinck R Bezzubov V A Bhat P C Bhatnagar V Bhattacharjee M Blazey G Blessing S Boehnlein A Bojko N I Borcherding F Bos K Brandt A Breedon R Briskin G Brock R Brooijmans G Bross A Buchholz D Buehler M Buescher V Burtovoi V S Butler J M Canelli F |
| Affiliation: | Joint Institute for Nuclear Research, Dubna, Russia. |
| Abstract: | 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 D0 detector at the Fermilab Tevatron during 1992-1996. In the absence of a signal, we set 95% C.L. upper limits on the cross sections for the processes pp-->rho(T),omega(T),Z'-->e(+)e(-) as a function of the mass of the decaying particle. For certain model parameters, we exclude the existence 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. |
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