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@MASTERSTHESIS{Beyer:416692,
author = {Beyer, Jakob},
othercontributors = {Kobel, Michael and List, Jenny},
title = {{M}easuring {V}ector {B}oson {S}cattering at the future
{I}nternational {L}inear {C}ollider},
school = {Technische Universität Dresden},
type = {Masterarbeit},
reportid = {PUBDB-2018-05085},
pages = {90},
year = {2018},
note = {Masterarbeit, Technische Universität Dresden, 2018},
abstract = {Vector boson scattering (VBS) is considered a
well-motivated target in the search for physics beyond the
Standard Model (BSM). Setting stringent limits on BSM
physics inthe Higgs and electroweak sector requires
precision measurements of VBS. This is best done in the
clean and controlled environment at high-energy
electron-positron colliders.In this work, the sensitivity of
the International Linear Collider (ILC) to VBS in hadronic
final states is studied at √s = 1 TeV in the International
Large Detector (ILD). Datasets from full detector
simulations are used for this study.A key aspect of this
analysis is the separation of the WW and ZZ final state. In
the hadronic final state, this is done primarily through
reconstructed boson masses. Themass peaks of the WW and ZZ
final states are found to be well separated, but
inconsistencies with previous studies are observed. Problems
in the final state reconstruction are identified to
originate from heavy jet reconstruction as well as jet
clustering.Neutrino corrections for heavy quark jets are
investigated. A promising approach based on the average
kinematics in semi-leptonic decays is identified.The peak
separation is tested for two versions of the ILD - a large
and a small model - and found to not be visibly
influenced.First steps towards a VBS analysis in an EFT
framework are taken. No optimization of the cut analysis or
application of corrections to heavy jets are done in this
step, but are identified as important aspects of future
analyses. Sensitive observables are extracted for
reconstructed WW and ZZ signal regions. Significances of
S/√B = 104 for WW final state events and 40 for ZZ events
are observed.Assumptions made in recent theory-level studies
which predict a sensitivity between 2 and 4 times better
than current LHC analyses are confirmed to be roughly
valid.},
cin = {FLC},
cid = {I:(DE-H253)FLC-20120731},
pnm = {611 - Fundamental Particles and Forces (POF3-611) / SFB 676
B01 - Optimierung des ILC setups: Physikprogramm,
Betriebsszenarien und Designentscheidungen (B01) (28895157)},
pid = {G:(DE-HGF)POF3-611 / G:(GEPRIS)28895157},
experiment = {EXP:(DE-H253)ILC(machine)-20150101},
typ = {PUB:(DE-HGF)19},
doi = {10.3204/PUBDB-2018-05085},
url = {https://bib-pubdb1.desy.de/record/416692},
}