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Search for a scalar or vector particle decaying into Z gamma in p(p)over-bar collisions at root s=1.96 TeV
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2009 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 671, no 3, 349-355 p.Article in journal (Refereed) Published
Abstract [en]

We present a search for a narrow scalar or vector resonance decaying into Z gamma with a subsequent Z boson decay into a pair of electrons or moons. The data for this search were collected with the D circle divide detecror at the Fermilab Tevatron p (p) over bar collider at a center of mass energy root s = 1.96 TeV. 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 (sigma x B) into Z gamma. These limits range from 0.19 (0.20) pb for a scalar (vector) resonance mass of 600 GeV/c(2) to 2.5 (3.1) pb for a mass of 140 GeV/c(2).

Place, publisher, year, edition, pages
2009. Vol. 671, no 3, 349-355 p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-139988DOI: 10.1016/j.physletb.2008.12.009ISI: 000263119200006OAI: oai:DiVA.org:uu-139988DiVA: diva2:382640
Available from: 2011-01-03 Created: 2011-01-03 Last updated: 2017-12-11Bibliographically approved

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