Number of the records: 1
Measurement of the Zgamma to nunugamma cross section and limits on anomalous ZZgamma and Zgammagamma couplings in ppbar collisions at sqrt{s} = 1.96 TeV
- 1.
SYSNO ASEP 0335425 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Measurement of the Zgamma to nunugamma cross section and limits on anomalous ZZgamma and Zgammagamma couplings in ppbar collisions at sqrt{s} = 1.96 TeV Title Měření účinného průřezu Z/gamma -> neutrina a limity na anomální vazby ZZgamma a Z gamma gamma v proton antiprotonových srážkách při těžišťové energii 1.96 TeV Author(s) Abazov, V. M. (RU)
Abbott, B. (US)
Abolins, M. (US)
Kupčo, Alexander (FZU-D) RID, ORCID
Lokajíček, Miloš (FZU-D) RID, ORCIDNumber of authors 499 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 102, č. 20 (2009), 201802/1-201802/7Number of pages 7 s. Language eng - English Country US - United States Keywords D0 ; gamma Subject RIV BF - Elementary Particles and High Energy Physics R&D Projects LC527 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LA08047 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100502 - FZU-D (2005-2011) UT WOS 000266309000011 DOI 10.1103/PhysRevLett.102.201802 Annotation We present the first observation of the Zgamma to nunugamma process at the Tevatron at 5.1 standard deviations significance, based on 3.6 fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron ppbar Collider at sqrt{s} = 1.96 TeV. The measured Zgamma cross section multiplied by the branching fraction of Z to nunu is 32 +- 9 (stat.+syst.) +- 2 (lumi.) fb for the photon ET > 90 GeV. It is in agreement with the standard model prediction of 39 +- 4 fb. We set the most restrictive limits on anomalous trilinear Zgammagamma and ZZgamma gauge boson couplings at a hadron collider to date, with three constraints being the world's strongest. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2010
Number of the records: 1