Measurement of the e+ e- ---> Z Z production cross-section at center-of-mass energies of 183-GeV and 189-GeV - INSPIRE

DataBETA

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

ALEPH

Collaboration

Oct, 1999

22 pages

Published in:

Phys.Lett.B 469 (1999) 287-302

e-Print:

hep-ex/9911003 [hep-ex]

DOI:

10.1016/S0370-2693(99)01288-5

Report number:

CERN-EP-99-141

Experiments:

CERN-LEP-ALEPH

View in:

reference search58 citations

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Abstract:

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.

Note:

18 pages, 9 figures

electron positron: colliding beams
electron positron: annihilation
Z0: pair production
Z0: leptonic decay
Z0: hadronic decay
channel cross section
ALEPH
experimental results
CERN LEP Stor
electron positron --> 2Z0 anything

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