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@PHDTHESIS{Maekelae:482499,
author = {Maekelae, Toni},
othercontributors = {Lipka, Katerina and Moch, Sven-Olaf},
title = {{T}owards global interpretation of {LHC} data: {SM} and
{EFT} couplings from jet and top quark measurements at
{CMS}},
school = {Universität Hamburg},
type = {Dissertation},
address = {Hamburg},
publisher = {Verlag Deutsches Elektronen-Synchrotron DESY},
reportid = {PUBDB-2022-04804, DESY-THESIS-2022-017},
series = {DESY-THESIS},
pages = {213 pages: Illustrations, figures},
year = {2022},
note = {Dissertation, Universität Hamburg, 2022},
abstract = {This thesis presents the first global interpretation of the
measurements of doubledifferentialcross sections of
inclusive jet and top quark-antiquark pair (tt) productionin
proton-proton collisions at the Large Hadron Collider (LHC)
at the center ofmass energy of √s = 13TeV, together with
inclusive measurements in Deep Inelasticelectron-proton
Scattering (DIS) at HERA. The LHC data have been recordedby
the Compact Muon Solenoid (CMS) experiment in 2016, and
correspond to theintegrated luminosity of 33.5 fb−1 for
inclusive jet measurement or 35.9 fb−1 for the
ttmeasurement.This novel analysis is performed at
next-to-leading order (NLO) of perturbative
quantumchromodynamics (QCD), where the inclusive neutral and
charged current DISmeasurements at HERA, the CMS jet
measurements and the normalized triple-differentialcross
sections of tt production are used together to constrain the
parametersof QCD and impose constraints on new physics. In
particular, the StandardModel Lagrangian is extended to
incorporate effective contributions from quark
contactinteractions (CI). In this analysis, the constraints
on the parton distributions,the strong coupling constant
αS(mZ) and the top quark pole mass mpolet are obtainedand,
simultaneously, limits on the scale Λ of the CI are
imposed. This results inαS(mZ) = 0.1188±0.0031, mpolet =
170.4±0.7GeV and the $95\%$ confidence level limitsof Λ >
24TeV for purely left-handed, Λ > 32TeV for vector-like and
Λ > 31TeVfor axial vector-like exchanges. For the first
time, the LHC data are used for extractingthe Wilson
coefficient of the CI, unbiased from the assumptions on the
StandardModel parameters.The jet and top quark production at
the LHC are further investigated individually,to determine
the QCD parameters at highest precision. A Standard Model
analysisis performed at next-to-next-to-leading order (NNLO)
of perturbative QCD usingthe CMS jet cross section
measurements together with the HERA DIS data. Theparton
distribution functions in the proton are extracted
simultaneously with thestrong coupling constant αS(mZ) =
0.1166 ± 0.0017. This the most precise singlemeasurement of
the strong coupling constant at the LHC, to date.Further,
the CMS measurements of the tt cross sections are used to
extract the topquark mass in the MSR renormalisation scheme.
In this scheme, the mass dependencevin the difference of the
pole and modified minimal subtraction (MS) masses is
replacedby a scale parameter R. The first study of the
behaviour of the R scale is presented.The exctracted top
quark MSR mass obtained using CMS measurements results
inmMSRnt (R = 80GeV) = 169.3+0.6−0.7 GeV, which is up to
now the most precise value ofthe top quark MSRn mass
extracted from experimental data.The presented
investigations of the fundamental couplings of the Standard
Model, andof new physics, are at the edge of precision in
experimental physics and high-energyphenomenology, paving
the road towards a global interpretation of LHC data.},
cin = {CMS},
cid = {I:(DE-H253)CMS-20120731},
pnm = {611 - Fundamental Particles and Forces (POF4-611) / PHGS,
VH-GS-500 - PIER Helmholtz Graduate School
$(2015_IFV-VH-GS-500)$},
pid = {G:(DE-HGF)POF4-611 / $G:(DE-HGF)2015_IFV-VH-GS-500$},
experiment = {EXP:(DE-H253)LHC-Exp-CMS-20150101},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
doi = {10.3204/PUBDB-2022-04804},
url = {https://bib-pubdb1.desy.de/record/482499},
}