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Search for direct top squark pair production in events with a boson, -jets and missing transverse momentum in TeV collisions with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2886
2014 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 74, no 6Article in journal (Refereed) Published
Abstract [en]

A search is presented for direct top squark pair production using events with at least two leptons including a same-flavour opposite-sign pair with invariant mass consistent with the boson mass, jets tagged as originating from -quarks and missing transverse momentum. The analysis is performed with proton-proton collision data at collected with the ATLAS detector at the LHC in 2012 corresponding to an integrated luminosity of 20.3 fb. No excess beyond the Standard Model expectation is observed. Interpretations of the results are provided in models based on the direct pair production of the heavier top squark state () followed by the decay to the lighter top squark state () via , and for pair production in natural gauge-mediated supersymmetry breaking scenarios where the neutralino () is the next-to-lightest supersymmetric particle and decays producing a boson and a gravitino () via the process.

Place, publisher, year, edition, pages
2014. Vol. 74, no 6
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-148011DOI: 10.1140/epjc/s10052-014-2883-6ISI: 000337043800001Scopus ID: 2-s2.0-84904905132OAI: oai:DiVA.org:kth-148011DiVA: diva2:734068
Note

QC 20140704

Available from: 2014-07-14 Created: 2014-07-14 Last updated: 2017-12-05Bibliographically approved

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Strandberg, Jonas

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CiteExportLink to record
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  • apa
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Output format
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