Search for Scalar Top Admixture in the ttbar Lepton+Jets Channel at D0

Details Search for Scalar Top Admixture in the ttbar Lepton+Jets Channel at D0 Search for Scalar Top Admixture in the ttbar Lepton+Jets Channel at D0

2007-10-04

arxiv.org/abs/0710.1016v1

Physics

High Energy Physics

High Energy Physics - Experiment

Submitted for the SUSY07 conference proceedings. 4 pages, LateX, 4 eps figures, 2 LateX style files

Scientific paper

A search has been performed for scalar top quark pair production in the lepton+jets channel in ~1 fb^(-1) of data. Kinematic differences between the exotic stop-stopbar and the dominant ttbar process are used to separate the two possible contributions. For scalar top quark masses of 145-175 GeV and chargino masses of 105-135 GeV we obtain upper cross section limits at 95% confidence level for stop-stopbar production that are a factor of ~7-12 higher than expected for the Minimal Supersymmetric Standard Model (MSSM).

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