Search For The Supersymmetric Partner Of The Top Quark In Dilepton Events Produced In Pbarp Collisions At Sqrts

Download or read book Search for the Supersymmetric Partner of the Top Quark in Dilepton Events Produced in $p\bar{p}$ Collisions at $\sqrt{s}$ written by and published by . This book was released on 2002 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supersymmetric partners of top quarks, stops, will be pair produced at the Fermi National Accelerator Laboratory in proton-antiproton collisions at a center-of-mass energy √s= 1.8TeV if kinematically accessible. Within the framework of the Minimal Supersymmetric extension of the Standard Model, the stop quarks are assumed to decay into a lepton, a bottom quark and a supersymmetric neutrino, sneutrino. Thus the experimental signature of stop presence in the data would be two opposite electric charge leptons, hadronic jets and substantial energy imbalance in the detector due to the escaping, undetected sneutrinos. We searched a total of ∫ Ldt = 107.2 pb-1 of data collected by the Collider Detector at Fermilab experiment. No evidence of a stop signal has been found which allows us to calculate a 95% con dence level upper limit on the number of stop-originated events in the data of this size. We have translated this into a 95% con dence level exclusion region in the stop versus sneutrino mass plane.