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Search for admixture of scalar top quarks in the ttbar lepton+jets final state at sqrt(s)=1.96 TeV

Research output: Contribution to Journal/MagazineJournal articlepeer-review

<mark>Journal publication date</mark>6/04/2009
<mark>Journal</mark>Physics Letters B
Issue number1
Number of pages7
Pages (from-to)4-10
Publication StatusPublished
<mark>Original language</mark>English


A search for pair production of the lightest supersymmetric partner of the top quark is performed in the lepton+jets channel using 0.9 fb-1 of data collected by the D0 experiment. Kinematic differences between scalar top quark pair production and the dominant top quark pair production background are used to separate the two processes. First limits from Run II of the Fermilab Tevatron Collider for the scalar top quark decaying to a chargino and a b quark are obtained for scalar top quark masses of 130-190 GeV and chargino masses of 90-150 GeV.

Bibliographic note

submitted to Phys. Lett. B