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Measurement of the ZZ production cross section in p(p)over-bar collisions at root s=1.96 TeV
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
2011 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 84, no 1, 011103- p.Article in journal (Refereed) Published
Abstract [en]

We present a new measurement of the production cross section sigma(p (p) over bar -> ZZ) at a center-of-mass energy root s = 1.96 TeV, obtained from the analysis of the four charged lepton final state l(+)l(-)l'(+)l'-(l,l' = e or mu). We observe ten candidate events with an expected background of 0: 37 +/- 0: 13 events. The measured cross section sigma(p (p) over bar -> ZZ) = 1.26(-0.37)(+0.47)(stat) +/- 0.14(syst) pb is in agreement with NLO QCD predictions. This result is combined with a previous result from the ZZ -> l(+)l(-)v (v) over bar channel resulting in a combined cross section of sigma(p (p) over bar -> ZZ) = 1.40(-0.37)(+0.43)(stat) +/- 0.14(syst) pb.

Place, publisher, year, edition, pages
2011. Vol. 84, no 1, 011103- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-66603DOI: 10.1103/PhysRevD.84.011103ISI: 000292514400002OAI: oai:DiVA.org:su-66603DiVA: diva2:468120
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422

Available from: 2011-12-20 Created: 2011-12-20 Last updated: 2017-12-08Bibliographically approved

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