The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 1998 in e(+)e(-) collisions at a centre-of-mass energy of 189 GeV. All the visible final states are considered and the cross section of this process is measured to be 0.74(-0.14)(+0.15)(stat.) +/- 0.04(syst)pb. Final states containing b quarks are enhanced by a dedicated selection and their production cross section is found to be 0.18(-0.07)(+0.09)(stat) +/- 0.02(syst) pb. Both results are in agreement with the Standard Model predictions. Limits on anomalous couplings between neutral gauge bosons are derived from these measurements. (C) 1999 Published by Elsevier Science B.V. All rights reserved
The cross section for the production of Z boson pairs is measured using the data collected by the L3...
The cross section for the production of Z boson pairs is measured using the data collected by the L3...
Events stemming from the pair-production of Z bosons in e+e- collisions are studied using 217.4 pb-1...
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 199...
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 199...
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 199...
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 199...
The cross section for the production of Z boson pairs is measured using the data collected by the L3...
The cross section for the production of Z boson pairs is measured using the data collected by the L3...
The cross section for the production of Z boson pairs is measured using the data collected by the L3...
Events stemming from the pair-production of Z bosons in e+e- collisions are studied using 217.4 pb-1...
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 199...
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 199...
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 199...
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 199...
The cross section for the production of Z boson pairs is measured using the data collected by the L3...
The cross section for the production of Z boson pairs is measured using the data collected by the L3...
The cross section for the production of Z boson pairs is measured using the data collected by the L3...
Events stemming from the pair-production of Z bosons in e+e- collisions are studied using 217.4 pb-1...