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Study of Z Pair Production and Anomalous Couplings in $e^+ e^-$ Collisions at $\sqrt{s}$ between 190 GeV and 209 GeV
- Source :
- European physical journal : C : particles and fields
- Publication Year :
- 2003
-
Abstract
- A study of Z-boson pair production in e+e- annihilation at center-of-mass energies between 190 GeV and 209 GeV is reported. Final states containing only leptons, (l+l-l+l- and l+l-nn), quark and lepton pairs, (qql+l-, qqnn) and only hadrons (qqqq) are considered. In all states with at least one Z boson decaying hadronically, lifetime, lepton and event-shape tags are used to separate bb pairs from qq final state. Limits on anomalous ZZgamma and ZZZ couplings are derived from the measured cross sections and from event kinematics using an optimal observable method. Limits on low scale gravity with large dimensions are derived from the cross sections and their dependence on polar angle.<br />34 pages, 10 figures, Submitted to Eur. Phys. J
- Subjects :
- Quark
Physics
Particle physics
Annihilation
Physics and Astronomy (miscellaneous)
010308 nuclear & particles physics
Hadron
High Energy Physics::Phenomenology
FOS: Physical sciences
Observable
State (functional analysis)
01 natural sciences
High Energy Physics - Experiment
High Energy Physics - Experiment (hep-ex)
Pair production
0103 physical sciences
High Energy Physics::Experiment
010306 general physics
Engineering (miscellaneous)
Event (particle physics)
Particle Physics - Experiment
Lepton
Subjects
Details
- Language :
- English
- ISSN :
- 14346044
- Database :
- OpenAIRE
- Journal :
- European physical journal : C : particles and fields
- Accession number :
- edsair.doi.dedup.....537bd9ad2cb4f2596e3b7bc1eb69c1dc