Speaker
Su-Jung Park
(University of Rochester)
Description
We report on a search for scalar top quark pair production in the lepton+jets
channel. Just like Standard Model top quarks, scalar top quarks are produced in
pairs in proton-antiproton collisions. One of the preferred scenarios is for the
scalar top to decay to a b-quark and a chargino, with the chargino
subsequently decaying into a real or virtual W boson and a neutralino. The
neutralino escapes without being detected. Thus, the final state signature can
be a lepton, two b-jets, two light quark jets and missing transverse energy,
which is identical to the signature of Standard Model $t\bar{t}$ production. We
use the kinematic differences between the exotic and the Standard Model
scenarios to separate the two.
Author
Su-Jung Park
(University of Rochester)
Co-author
D0 Collaboration
