@Article{ATLASCollaborationAad_etal2012, author="ATLAS Collaboration (Aad, G. et al and Amoros, G. and Cabrera Urban, S. and Castillo Gimenez, V. and Costa, M. J. and Ferrer, A. and Fiorini, L. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Hernandez Jimenez, Y. and Higon-Rodriguez, E. and Irles Quiles, A. and Kaci, M. and Lacasta, C. and Lacuesta, V. R. and Marti-Garcia, S. and Mi{\~A}{\textpm}ano, M. and Mitsou, V. A. and Moles-Valls, R. and Moreno Llacer, M. and Oliver Garcia, E. and Perez Garcia-Esta{\~A}{\textpm}, M. T. and Romero Adam, E. and Ros, E. and Salt, J. and Sanchez Martinez, V. and Solans, C. A. and Soldevila, U. and Sanchez, J. and Torro Pastor, E. and Valladolid Gallego, E. and Valls Ferrer, J. A. and Villaplana Perez, M. and Vos, M. and Wildauer, A.", title="Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at root s=7 TeV", journal="Physics Letters B", year="2012", publisher="Elsevier Science Bv", volume="715", number="1-3", pages="44--60", abstract="The results of a search for pair production of the lighter scalar partners of top quarks ((t) over bar (1)) in 2.05 fb(-1) of pp collisions at root s = 7 TeV using the ATLAS experiment at the LHC are reported. Scalar top quarks are searched for in events with two same flavour opposite-sign leptons (e, mu) with invariant mass consistent with the Z boson mass, large missing transverse momentum and jets in the final state. At least one of the jets is identified as originating from a b-quark. No excess over Standard Model expectations is found. The results are interpreted in the framework of R-parity conserving, gauge mediated Supersymmetry breaking {\textquoteright}natural{\textquoteright} scenarios, where the neutralino ((chi) over bar (0)(1)) is the next-to-lightest supersymmetric particle. Scalar top quark masses up to 310 GeV are excluded for 115 GeV m(<(chi) over bar1)(0) 230 GeV at 95{\%} confidence level, reaching an exclusion of m(<(t) over bar1) 330 GeV for m(<(chi) over bar1)(0) = 190 GeV. Scalar top quark masses below 240 GeV are excluded for all values of m((chi) over bar1)(0) > m(z).", optnote="WOS:000308519000009", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1164), last updated on Thu, 18 Oct 2012 10:28:57 +0000", issn="0370-2693", doi="10.1016/j.physletb.2012.07.010", opturl="http://arxiv.org/abs/arXiv:1204.6736", opturl="https://doi.org/10.1016/j.physletb.2012.07.010", archivePrefix="arXiv", eprint="arXiv:1204.6736", language="English" }