Search for 3- and 4-body decays of the scalar top quark in $pp$ collisions at $s = 1.8$ TeV

Abazov, V. M. and Belyaev, Alexander (2004) Search for 3- and 4-body decays of the scalar top quark in $pp$ collisions at $s = 1.8$ TeV. Physics Letters B, B581, 147-155. (doi:10.1016/j.physletb.2003.12.001).

Abstract

We have searched for the signature of 3- and 4-body decays of pair-produced scalar top quarks (stop) in the inclusive final state containing an electron, a muon, and significant missing transverse energy using a sample of pp^- events corresponding to 108.3 pb⁻¹ of data collected with the DØ detector at Fermilab. The search is done in the framework of the minimal supersymmetric standard model assuming that the neutralino (χ^~0₁) is the lightest supersymmetric particle and is stable. No evidence for a signal is found and we derive cross-section upper limits as a function of stop (^~t̃) and neutralino masses in different decay scenarios leading to the  bℓνχ^~0₁   final state.

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Contributors

Author: Alexander Belyaev

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