Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 378 for “"CMS"”.
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Desenvolvimento web com CMS
… conhecimento técnico. Nos últimos anos, CMSs (Content Management System ─ Sistemas de Gerenciamento de conteúdo) vêm se tornando cada vez mais populares, atualmente, correspondem a quase metade de todos os sites da Internet. Estes sistemas auxiliam tanto clientes quanto desenvolvedores na …
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Diboson physics with CMS detector
… in pp collision with the Compact Muon Solenoid (CMS) detector at Large Hadron Collider (LHC). A study of Z+gamma process is performed on the data collected by the CMS during 2011 and corresponding to integrated luminosity L= 5 fb[superscript]-1. The study consists of two parts: cross section …
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Measuring Higgs self-coupling at CMS
This study evaluates the Compact Muon Solenoid (CMS) experiment's ability to characterize Higgs self-coupling through the ... channel. The effective cross-section for detecting ... events is computed by finding the fraction of simulated events that make it through selection cuts. These same cuts …
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Measurement of the Anomalous Magnetic Moment of Tau Lepton with CMS Experiments and Improvements to the Zero Degree Calorimeters at CMS
… data for this measurement were collected by the CMS experiment in 2018 with an integrated luminosity of up to 1.70nb?1 and at a center-of-mass energy per nucleon pair of = 5.02TeV. This measurement is an improvement over a previously reported measurement from CMS using 2015 PbPb Data [4]. The new …
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Electron reconstruction in simulated Pb+Pb events in CMS
… In addition, the Compact Muon Solenoid (CMS) is currently being commissioned. It will start taking data from as early as late 2008. The detector will be excel in muon detection, but it is also a general purpose detector for p+p and Pb+Pb collsions. The CMS experiment opens up a new window …
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Exploring the space of jets with CMS Open Data
… physics studies on the space of jets using the CMS 2011 Open Data, experimental data of 7 TeV proton-proton collisions from the 2011 Run at the Large Hadron Collider released by the CMS collaboration for public use. Our first study uses the Energy Mover's Distance (EMD), a metric that quantifies …
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Measurement of [gamma](1S) spin alignment with the CMS detector
This thesis presents a measurement of the spin alignment of prompt [gamma](1S) mesons produced in proton-proton collisions at [square root of]s = 7 TeV at the Large Hadron Collider using the Compact Muon Solenoid detector. Approximately 1 fb-1 of data taken during the year 2011 is analyzed. The …
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Measurement of [formula] in Associated Production with the CMS Detector
… cross section of [formula] is measured with the CMS Detector. The Simplified Template Cross Section framework is used. The inclusive strength of the measured signal relative to the Standard Model is [formula], which agrees with the Standard Model within 2.1 standard deviations. The measured …
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Needles in the Quantum Haystack: CMS Anomaly Detection with Normalizing Flows
… variable distributions of hidden signals in CMS data. Through several studies on both Monte Carlo samples and 13 TeV data from CMS, we demonstrate that QUAK with normalizing flows (QUAK-NF) can be a powerful tool for conducting searches for BSM physics.
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Observation of electroweak W±W± JJ production with the CMS experiment
The CMS detector at the CERN LHC is sensitive to Standard Model predictions regarding the production of two W bosons with the same charge accompanied by two jets. In particular, when these particles are produced in a topology where the jets have a high invariant mass and are largely separated in …
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Jet quenching in heavy-ion collisions at LHC with CMS detector
… of correlations of jet pairs as measured by the CMS detector at LHC. The implications of the results are discussed by comparison of simple models with data. It is observed that the geometrical configuration of the dijets and the nuclear collision region plays an important role in the correlations …
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Evidence for a Higgs boson in tau decays with the CMS detector
In this thesis, I describe the search for a Higgs boson through its decay to a pair of tan leptons with the tau-pair subsequently decaying to ail electron, a muon, and neutrinos. The search is performed using data collected from proton-proton collisions by the Compact Muon Solenoid experiment at …
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A study of tau identification with the CMS detector at the LHC
… will be collected by the Compact Muon Solenoid (CMS) detector on the Large Hadron Collider (LHC) at CERN. The two components of particle identification, efficiencies of [tau] identification from generator level information, along with fake rates of the current default algorithm have been …
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Studies of Jet Modification in Heavy Ion Collisions with the CMS Experiment
In the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC), lead ions are collided at ultra-relativistic velocities to produce Quark-Gluon Plasma (QGP), a state of matter where quarks and gluons are deconfined and move collectively. Jets are produced in high-momentum transfer …
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Neural-Network Based b-Tagging in the CMS Level 1 Trigger System
… Phase II upgrade of the Compact Muon Solenoid (CMS) detector for the High Luminosity Large Hadron Collider will greatly expand the hardware capabilities of the Level 1 Trigger (L1T) system. With the advent of tracks in the L1T, these upgrades bring the idea of b jet identification within the L1T …
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Search for the Higgs Boson in the ZZ --> ℓℓvv channel with CMS
… data collected with the Compact Muon Solenoid (CMS) detector at the LHC. Overviews of electroweak theory and of Higgs production at the LHC are given, followed by descriptions of the CMS detector and the algorithms for event reconstruction. A measurement of the inclusive cross section for Z …
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Machine learning techniques for calorimeter cluster calibration of the CMS particle flow algorithm.
… Calorimeter (HCAL) are key components of the CMS detector. The ECAL is designed to measure the energies of electrons and photons, while the HCAL measures the energies of charged and neutral hadrons. The Particle Flow (PF) algorithm integrates information from various CMS sub-detectors to …
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