Title Strong evidence for ZZ production in $p\overline{p}$ collisions at $\sqrt{s}$=1.96 TeV Author Aaltonen, T. Van Remortel, N. et al. Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2008 New York, N.Y. , 2008 Subject Physics Source (journal) Physical review letters. - New York, N.Y. Volume/pages 100(2008) :20 , p. 201801,1-201801,7 ISSN 0031-9007 ISI 000256206400015 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract We report the first evidence of Z boson pair production at a hadron collider with a significance exceeding 4 standard deviations. This result is based on a data sample corresponding to 1.9  fb-1 of integrated luminosity from pp̅ collisions at √s=1.96  TeV collected with the Collider Detector at Fermilab II detector. In the ℓℓℓ′ℓ′ channel, we observe three ZZ candidates with an expected background of 0.096-0.063+0.092 events. In the ℓℓνν channel, we use a leading-order calculation of the relative ZZ and WW event probabilities to discriminate between signal and background. In the combination of ℓℓℓ′ℓ′ and ℓℓνν channels, we observe an excess of events with a probability of 5.1×10-6 to be due to the expected background. This corresponds to a significance of 4.4 standard deviations. The measured cross section is σ(pp̅ →ZZ)=1.4-0.6+0.7(stat+syst)  pb, consistent with the standard model expectation. Full text (open access) https://repository.uantwerpen.be/docman/irua/a6b73e/66f07e64.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000256206400015&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000256206400015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000256206400015&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle