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https://hdl.handle.net/2440/102369
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dc.contributor.author | Aad, G. | - |
dc.contributor.author | ATLAS Collaboration, | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | European Physical Journal C: Particles and Fields, 2014; 74(6):2883-1-2883-25 | - |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.issn | 1434-6052 | - |
dc.identifier.uri | http://hdl.handle.net/2440/102369 | - |
dc.description.abstract | 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 Z boson mass, jets tagged as originating from b-quarks and missing transverse momentum. The analysis is performed with proton–proton collision data at s√=8\ TeV collected with the ATLAS detector at the LHC in 2012 corresponding to an integrated luminosity of 20.3 fb⁻¹. 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 (t~2) followed by the decay to the lighter top squark state (t~1) via t~2→Zt~1, and for t~1 pair production in natural gauge-mediated supersymmetry breaking scenarios where the neutralino (χ~01) is the next-to-lightest supersymmetric particle and decays producing a Z boson and a gravitino (G~) via the χ~01→ZG~ process. | - |
dc.description.statementofresponsibility | G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni … M. White .. The ATLAS Collaboration | - |
dc.language.iso | en | - |
dc.publisher | Springer | - |
dc.source.uri | http://dx.doi.org/10.1140/epjc/s10052-014-2883-6 | - |
dc.subject | ATLAS Collaboration | - |
dc.title | Search for direct top squark pair production in events with a Z boson, b-jets and missing transverse momentum in √s = 8 TeV pp collisions with the ATLAS detector | - |
dc.title.alternative | Search for direct top squark pair production in events with a Z boson, b-jets and missing transverse momentum in root s = 8 TeV pp collisions with the ATLAS detector | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1140/epjc/s10052-014-2883-6 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 7 Chemistry and Physics publications |
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