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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
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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Number of Authors: 2886
2014 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 4, no 6, 2883- p.Article 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. 4, no 6, 2883- p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-228594DOI: 10.1140/epjc/s10052-014-2883-6ISI: 000337043800001OAI: oai:DiVA.org:uu-228594DiVA: diva2:734508
Note

ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1140/epjc/s10052-014-2883-6

Available from: 2014-07-17 Created: 2014-07-17 Last updated: 2017-12-05Bibliographically approved

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Brenner, RichardBuszello, Claus P.Coniavitis, EliasEkelöf, TordEllert, MattiasFerrari, ArnaudIsaksson, CharlieMadsen, AlexanderÖhman, HenrikPelikan, DanielRangel-Smith, Camilla

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Brenner, RichardBuszello, Claus P.Coniavitis, EliasEkelöf, TordEllert, MattiasFerrari, ArnaudIsaksson, CharlieMadsen, AlexanderÖhman, HenrikPelikan, DanielRangel-Smith, Camilla
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High Energy Physics
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European Physical Journal C
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