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Search for Z gamma events with large missing transverse energy in p(p)over-bar collisions at root s = 1.96 TeV
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2012 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 86, no 7, 071701- p.Article in journal (Refereed) Published
Abstract [en]

We present the first search for new phenomena in Z gamma final states with large missing transverse energy using data corresponding to an integrated luminosity of 6.2 fb(-1) collected with the D0 experiment in p (p) over bar collisions at root s 1.96 TeV. This signature is predicted in gauge-mediated supersymmetry-breaking models, where the lightest neutralino (chi) over tilde (0)(1) is the next-to-lightest supersymmetric particle and is produced in pairs, possibly through decay from heavier supersymmetric particles. The (chi) over tilde (0)(1) can decay either to a Z boson or a photon and an associated gravitino that escapes detection. We exclude this model at the 95% C.L. for supersymmetry-breaking scales of Lambda < 87 TeV.

Place, publisher, year, edition, pages
2012. Vol. 86, no 7, 071701- p.
Keyword [en]
DYNAMICAL SUPERSYMMETRY BREAKING; ROOT-S=1.96 TEV; QCD CORRECTIONS; PAIR PRODUCTION; MOMENTUM; DETECTOR
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-184453DOI: 10.1103/PhysRevD.86.071701ISI: 000309386400001OAI: oai:DiVA.org:uu-184453DiVA: diva2:566729
Available from: 2012-11-09 Created: 2012-11-07 Last updated: 2017-12-07Bibliographically approved

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Buszello, Claus P.

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