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Observation of ZZ Production in p(p)over-bar Collisions at root s=1.96 TeV
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2008 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 101, no 17, 171803- p.Article in journal (Refereed) Published
Abstract [en]

We present an observation for ZZ -> l(+) l(-) l'(+) l'(-) (l, l' =e or mu) production in p (p) over bar collisions at a center-of-mass energy of root s = 1.96 TeV. Using 1.7 fb(-1) of data collected by the D0 experiment at the Fermilab Tevatron Collider, we observe three candidate events with an expected background of 0.14(-0.02)(+0.03) events. The significance of this observation is 5.3 standard deviations. The combination of D0 results in this channel, as well as in ZZ -> l(+) l(-) v (v) over bar yields a significance of 5.7 standard deviations and a combined cross section of sigma(ZZ) = 1.60 +/- 0.63(stat)(-0.17)(+0.16)(syst) pb.

Place, publisher, year, edition, pages
2008. Vol. 101, no 17, 171803- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-152256DOI: 10.1103/PhysRevLett.101.171803ISI: 000260383600018OAI: oai:DiVA.org:uu-152256DiVA: diva2:413097
Available from: 2011-04-27 Created: 2011-04-27 Last updated: 2017-12-11Bibliographically approved

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