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@PHDTHESIS{Endres:689629,
author = {Endres, Matthias},
othercontributors = {Hebbeker, Thomas and Pooth, Oliver},
title = {{S}earches for {E}xcited {L}eptons in √s=8 and 13 {T}e{V}
{CMS} {D}ata},
school = {RWTH Aachen University},
type = {Dissertation},
address = {Aachen},
reportid = {RWTH-2017-04481},
pages = {1 Online-Ressource (ix, 145 Seiten) : Illustrationen,
Diagramme},
year = {2017},
note = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
University; Dissertation, RWTH Aachen University, 2017},
abstract = {This thesis is about searches for excited leptons, being
performed with CMS data from proton-proton collisions. The
presented analyses are based on data of an integrated
luminosity of 19.7 /fb that was taken during 2012 at √s=8
TeV (Run I), and 2.7 /fb from the 2015 period at √s=13 TeV
(Run II). Excited leptons (l*) are expected to be sign for a
possible lepton compositeness. Both analyses from the two
different datasets consider the production of an excited
muon (µ*) in association with another muon via contact
interactions. The considered decay mode into another muon
and a photon leads to a µµγ-final state. The factors f
and f' that regulate the coupling between excited and
Standard Model leptons, are assumed to be one. The observed
data is consistent with the expectation from the Standard
Model. Limits are set on the excluded signal cross section,
as well as on the excited muon mass and the compositeness
scale parameter Λ. Masses from 200 GeV up to 2.5(3) TeV ≤
$M_µ$ = Λ are excluded with the Run I (Run II) analysis.
At low excited muon masses, values of Λ up to 17(15) TeV
are excluded. Combining the results from Run I and Run II
extends the exclusion in Λ up to 19 TeV. Results from other
Run I analyses that consider neutral current decays of
excited electrons and muons are also evaluated. Since these
channels are also sensitive to different configurations of f
and f', excited electron (muon) masses are excluded up to
2.35(2.4) TeV for the case that $M_l*$ = Λ and f=-f'=1.},
cin = {133110 / 130000},
ddc = {530},
cid = {$I:(DE-82)133110_20140620$ / $I:(DE-82)130000_20140620$},
typ = {PUB:(DE-HGF)11},
doi = {10.18154/RWTH-2017-04481},
url = {https://publications.rwth-aachen.de/record/689629},
}
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