Search for the lightest scalar top quark in events with two leptons in ppbar collisions at sqrt(s)=1.96 TeV

Abstract

We report results of a search for the pair production of the lightest supersymmetric partner of the top quark using 1 fb-1 of data collected by the D0 detector at a ppbar center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider. Both scalar top quarks are assumed to decay into a b quark, a charged lepton and a scalar neutrino. The search is performed in the electron plus muon and dielectron final states. The signal topology consists of two isolated leptons, missing transverse energy, and jets. We find no evidence for this process and exclude regions of parameter space in the framework of the minimal supersymmetric standard model.

Submitted to Phys. Lett. B

References in corpus (6)

• PYTHIA 6.4 Physics and Manual
• Measurement of the ttbar production cross section in pbarp collisions at sqrt(s) = 1.96 TeV using secondary vertex b tagging
• Measurement of the top quark mass in the lepton+jets channel using the Ideogram Method
• Measurement of the ttbar production cross section in ppbar collisions using dilepton events
• Search for the pair production of scalar top quarks in the acoplanar charm jet topology in p pbar collisions at sqrt(s)=1.96 TeV
• Search for the lightest scalar top quark in events with two leptons in p-pbar collisions at sqrt(s) = 1.96 TeV

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