A search for vector-like leptons in ATLAS Run 2 data

dc.contributor	Graduate Program in Physics.
dc.contributor.advisor	Özcan, Veysi Erkcan.
dc.contributor.advisor	Ünel, N. Gökhan.
dc.contributor.author	Örgen, Bora.
dc.date.accessioned	2023-03-16T10:37:35Z
dc.date.available	2023-03-16T10:37:35Z
dc.date.issued	2021.
dc.identifier.other	PHYS 2021 O74
dc.identifier.uri	http://digitalarchive.boun.edu.tr/handle/123456789/13653
dc.description.abstract	The search for pair-produced heavy iso-singlet leptons predicted by Grand Unified Theory (GUT) based on group E6 is detailed in this study. The discovery channel through which the search has been conducted is pp→L_e L ‾_e→ZeWν_e→3l 2j E_T^miss. The data used in the study is the ATLAS Run 2 data which has an integrated luminosity of L=139 fb^(-1) from proton-proton collisions at 13 TeV center of mass-energy. A cut-based event selection has been performed to maximize signal to background yields. Exclusion limits without systematic uncertainties have been obtained, and the results have been found to be promising with the possibility to increase the lower mass limit of the heavy charged lepton to about 250 GeV from the previous limit of 100 GeV.
dc.format.extent	30 cm.
dc.publisher	Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021.
dc.subject.lcsh	Grand unified theories (Nuclear physics)
dc.subject.lcsh	Leptons (Nuclear physics)
dc.title	A search for vector-like leptons in ATLAS Run 2 data
dc.format.pages	xvii, 78 leaves ;