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Observation of WZ production

Abulencia, A; Adelman, J; Affolder, T; Akimoto, T; Albrow, MG; Ambrose, D; Amerio, S; ... Zucchelli, S; + view all (2007) Observation of WZ production. Physical Review Letters , 98 (16) , Article 161801. 10.1103/PhysRevLett.98.161801. Green open access

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Abstract

We report the first observation of the associated production of a W boson and a Z boson. This result is based on 1.1 fb(-1) of integrated luminosity from p (p) over bar collisions at root s=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. We observe 16 WZ candidates passing our event selection with an expected background of 2.7 +/- 0.4 events. A fit to the missing transverse energy distribution indicates an excess of events compared to the background expectation corresponding to a significance equivalent to 6 standard deviations. The measured cross section is sigma(p (p) over bar -> WZ)=5.0(-1.6)(+1.8) pb, consistent with the standard model expectation.

Type: Article
Title: Observation of WZ production
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.98.161801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.98.161801
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Z-GAMMA PRODUCTION, HADRON COLLIDERS, BOSON SECTOR, CDF
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/131711
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