Navigation ▼

Show simple item record

dc.contributor.advisor Hensel, Carsten Dr.
dc.contributor.author Mansour, Jason Dhia
dc.date.accessioned 2015-10-27T09:56:59Z
dc.date.available 2015-10-27T09:56:59Z
dc.date.issued 2015-10-27
dc.identifier.uri http://hdl.handle.net/11858/00-1735-0000-0023-965D-6
dc.language.iso eng de
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc 530 de
dc.title Search for Supersymmetry in Trilepton Final States with the DØ Experiment de
dc.type doctoralThesis de
dc.contributor.referee Quadt, Arnulf Prof. Dr.
dc.date.examination 2014-11-19
dc.subject.gok Physik (PPN621336750) de
dc.description.abstracteng A search for supersymmetry in the trilepton final state is performed using the full dataset of the DØ experiment. The analyzed data amounts to an integrated luminosity of ∫ℒ = 9.7 fb⁻¹ of pp̅ collisions, produced at √s = 1.96 TeV at the Fermilab Tevatron collider. The studied process is the coproduction of charginos and neutralinos, decaying into a final state of three leptons and missing transverse energy. To increase efficiency, only two identified leptons (e, µ) and one additional isolated track are required per event. The QCD multijet background is estimated from data, while other backgrounds are modeled via Monte Carlo. After a series of background-reduction cuts, a multivariate analysis is performed using boosted decision trees (BDT). In the distribution of the BDT output, no excess of data over background is seen. Limits on the cross section are set for the mSUGRA (CMSSM) model, as well as for a scenario with non-universal gaugino masses. de
dc.contributor.coReferee Große-Knetter, Jörn PD Dr.
dc.subject.eng Supersymmetry de
dc.subject.eng Hadron collider physics de
dc.subject.eng Tevatron de
dc.subject.eng DZero de
dc.subject.eng Particle Physics de
dc.subject.eng Trileptons de
dc.identifier.urn urn:nbn:de:gbv:7-11858/00-1735-0000-0023-965D-6-3
dc.affiliation.institute Fakultät für Physik de
dc.identifier.ppn 837901626

Files in this item

This item appears in the following Collection(s)

Show simple item record