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This book highlights the most complete characterization of the Higgs boson properties performed to date in the "golden channel," i.e., decay into a pair of Z bosons which subsequently decay into four leptons. The data collected by the CMS experiment in the so-called Run-II data-taking period of the LHC are used to produce an extensive set of results that test in detail the predictions of the Standard Model. Given the remarkable predictive power of the SM when including the Higgs boson, possible new physics will require even more extensive studies at higher statistics. A massive upgrade of the detectors is necessary to maintain the current physics performance in the harsh environment of the High-Luminosity LHC (HL-LHC) project, expected to start by the end of 2027. The CMS Collaboration will replace the current endcap calorimeters with a High Granularity Calorimeter (HGCAL). The HGCAL will be the very first large-scale silicon-based imaging calorimeter ever employed in a high-energy physics experiment. This book presents the results of the analysis of the test beam data collected with the first large-scale prototype of the HGCAL. The results of this analysis are used to corroborate the final design of the HGCAL and its nominal physics performance expected for the HL-LHC operations.

Particles (Nuclear physics). --- Measurement. --- Measuring instruments. --- Particle accelerators. --- Particle Physics. --- Measurement Science and Instrumentation. --- Accelerator Physics. --- Accelerators, Particle --- Atom smashers --- Charged particle accelerators --- Nuclear physics --- Accelerator mass spectrometry --- Instruments, Measuring --- Measurement --- Measuring tools --- Scientific apparatus and instruments --- Measuring --- Mensuration --- Mathematics --- Technology --- Metrology --- Physical measurements --- Elementary particles (Physics) --- High energy physics --- Nuclear particles --- Nucleons --- Instruments --- Higgs bosons. --- Z bosons. --- Higgs particles --- Particles, Higgs --- Bosons --- Z particles --- Z physics

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This work develops novel data analysis techniques enabling aspects of the Standard Model of particle physics to be tested with unprecedented precision using data from the DZero experiment at the high energy “Tevatron” proton-antiproton collider at Fermilab, Chicago. Vesterinen's measurements of the transverse momentum of Z bosons using the novel variable φ* have exposed deficiencies in the current state-of-the-art theoretical predictions for vector boson production at hadron colliders. These techniques are now being used in the experiments at CERN’s Large Hadron Collider (LHC) and have stimulated considerable interest in the theoretical particle physics community. Furthermore, Vesterinen's measurements of the cross sections for the production of pairs of vector bosons (WZ and ZZ) are to date the most precise ever made.

Physics. --- Quantum chromodynamics. --- Transport theory. --- Z bosons. --- Physics --- Physical Sciences & Mathematics --- Nuclear Physics --- Atomic Physics --- Boltzmann transport equation --- Transport phenomena --- Chromodynamics, Quantum --- QCD (Nuclear physics) --- Z particles --- Z physics --- Mathematical physics. --- Elementary particles (Physics). --- Quantum field theory. --- Elementary Particles, Quantum Field Theory. --- Mathematical Methods in Physics. --- Mathematical Physics. --- Mathematical physics --- Particles (Nuclear physics) --- Radiation --- Statistical mechanics --- Quantum electrodynamics --- Bosons --- Quantum theory. --- Physical mathematics --- Quantum dynamics --- Quantum mechanics --- Quantum physics --- Mechanics --- Thermodynamics --- Mathematics --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Relativistic quantum field theory --- Field theory (Physics) --- Quantum theory --- Relativity (Physics) --- Elementary particles (Physics) --- High energy physics --- Nuclear particles --- Nucleons --- Nuclear physics