Measurement of the e+e- -> ZZ production cross-section at centre-of-mass energies of 183 and 189GeV

Details Measurement of the e+e- -> ZZ production cross-section at centre-of-mass energies of 183 and 189GeV Measurement of the e+e- -> ZZ production cross-section at centre-of-mass energies of 183 and 189GeV

1999-11-03

arxiv.org/abs/hep-ex/9911003v1

Phys.Lett.B469:287-302,1999

Physics

High Energy Physics

High Energy Physics - Experiment

18 pages, 9 figures

Scientific paper

10.1016/S0370-2693(99)01288-5

The ee -> ZZ cross section at sqrt(s)=182.7 and 188.6 GeV has been measured
using the ALEPH detector. The analysis covers all of the visible ZZ final
states and yields cross section measurements of sigma_ZZ(182.7 GeV) = 0.11 +-
(0.16,0.11) (stat.) +- 0.04 (syst.) pb and sigma_ZZ(188.6 GeV) = 0.67 +- 0.13
(stat.) +- 0.04 (syst.) pb consistent with the Standard Model expectations.

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