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Search for a scalar or vector particle decaying into Zgamma in ppbar collisions at sqrt(s) = 1.96 TeV
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SYSNO ASEP 0322359 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Search for a scalar or vector particle decaying into Zgamma in ppbar collisions at sqrt(s) = 1.96 TeV Title Hledání skalární nebo vektorové částice rozpadající se na Zgamma v ppbar srážkách při sqrt(s) = 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, ORCIDSource Title Physics Letters. B. - : Elsevier - ISSN 0370-2693
Roč. 671, č. 3 (2009), s. 349-355Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords resonance ; boson Subject RIV BF - Elementary Particles and High Energy Physics R&D Projects LA08047 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) 1P05LA257 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LC527 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100502 - FZU-D (2005-2011) UT WOS 000263119200006 DOI 10.1016/j.physletb.2008.12.009 Annotation We present a search for a narrow scalar or vector resonance decaying into Zγ with a subsequent Z boson decay into a pair of electrons or muons. The data for this search were collected with the D0 detector at the Fermilab Tevatron collider at a center of mass energy . Using 1.1 (1.0) fb−1 of data, we observe 49 (50) candidate events in the electron (muon) channel, in good agreement with the standard model prediction. From the combination of both channels, we derive 95% C.L. upper limits on the cross section times branching fraction () into Zγ. These limits range from 0.19 (0.20) pb for a scalar (vector) resonance mass of 600 GeV/c2 to 2.5 (3.1) pb for a mass of 140 GeV/c2. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2009
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