Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt(s)=8 TeV pp collisions with the ATLAS detector

(2014) Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt(s)=8 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics. ISSN 1029-8479

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Abstract

The results of a search for top squark (stop) pair production in final states with one isolated lepton, jets, and missing transverse momentum are reported. 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 fb/1. The lightest supersymmetric particle (LSP) is taken to be the lightest neutralino which only interacts weakly and is assumed to be stable. The stop decay modes considered are those to a top quark and the LSP as well as to a bottom quark and the lightest chargino, where the chargino decays to the LSP by emitting a W boson. A wide range of scenarios with different mass splittings between the stop, the lightest neutralino and the lightest chargino are considered, including cases where the W bosons or the top quarks are off-shell. Decay modes involving the heavier charginos and neutralinos are addressed using a set of phenomenological models of supersymmetry. No significant excess over the Standard Model prediction is observed.[..]

Item Type:	Article
Subjects:	Q Science > QC Physics
Depositing User:	Symplectic Admin
Date Deposited:	31 Mar 2016 10:03
Last Modified:	31 Mar 2016 10:03
DOI:	10.1007/JHEP11(2014)118
URI:	http://livrepository.liverpool.ac.uk/id/eprint/2022462

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