Development Of New Approaches To Atlas Detector Simulation And Dark Matter Searches With Trigger Level Analysiis
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Development Of New Approaches To Atlas Detector Simulation And Dark Matter Searches With Trigger Level Analysis
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Author : Caterina M. L. Marcon
language : en
Publisher:
Release Date : 2021
Development Of New Approaches To Atlas Detector Simulation And Dark Matter Searches With Trigger Level Analysis written by Caterina M. L. Marcon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Elementary particles and their interactions are successfully described by the Standard Model of particle physics (SM). However, it has been observed that extensions Beyond the Standard Model (BSM) are required to account for a large part of yet undiscovered particles and interactions, such as Dark Matter (DM). To advance the knowledge of the SM and to pursue DM discoveries, CERN has the ambitious plan of further increasing the Large Hadron Collider's (LHC) energy and luminosity, thus reaching unprecedented event rates in the field of collider physics. This thesis is divided in three parts, dealing with some of the most challenging aspects of the ATLAS experiment at the LHC present and future activities. After a thorough review of the SM, BSM physics is outlined, with particular attention to DM searches. The second part of this work addresses the issue of coping with the foreseen event rates of the High-Luminosity LHC (HL-LHC) phase. Indeed, optimizations of the existing Geant4 simulation codes are a crucial step to alleviate the need for new and expensive hardware resources. With the objective of improving the efficiency of the simulation tools, an extensive study on different compilers, different optimization levels and different build types is presented. In addition, a preliminary investigation on the geometry description of the ATLAS Transition Radiation Tracker (TRT) modules is discussed. The last part of the thesis covers the DM searches carried out by the ATLAS Trigger-object Level Analysis (TLA) group. These searches are based on the analysis of the invariant mass spectrum of di-jet events and, during LHC Run 2, have been performed at energies in the 450-1800 GeV range (integrated luminosity up to 29.3 fb-1 and center of mass energy of 13 TeV). After a review of the TLA studies, a preliminary investigation on the performance of Bayesian and Frequentist statistical tools is presented. In particular, the attention is focused on the interpretation and handling of systematic uncertainties both on background and DM signals. This is of particular importance in the process of finding localized excesses, which can indicate the existence of DM signals, and setting limits on the DM event cross sections.
Search For Dark Matter With Atlas
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Author : Ruth Pöttgen
language : en
Publisher: Springer
Release Date : 2016-06-29
Search For Dark Matter With Atlas written by Ruth Pöttgen and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-29 with Science categories.
This thesis describes in detail a search for weakly interacting massive particles as possible dark matter candidates, making use of so-called mono-jet events. It includes a detailed description of the run-1 system, important operational challenges, and the upgrade for run-2. The nature of dark matter, which accounts for roughly 25% of the energy-matter content of the universe, is one of the biggest open questions in fundamental science. The analysis is based on the full set of proton-proton collisions collected by the ATLAS experiment at the Large Hadron Collider at √s = 8 TeV. Special attention is given to the experimental challenges and analysis techniques, as well as the overall scientific context beyond particle physics. The results complement those of non-collider experiments and yield some of the strongest exclusion bounds on parameters of dark matter models by the end of the Large Hadron Collider run-1. Details of the upgrade of the ATLAS Central Trigger for run-2 are also included.
Development Of New Approaches To Atlas Detector Simulation And Dark Matter Searches With Trigger Level Analysiis
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Author : Caterina M. L. Marcon
language : en
Publisher:
Release Date : 2021
Development Of New Approaches To Atlas Detector Simulation And Dark Matter Searches With Trigger Level Analysiis written by Caterina M. L. Marcon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Index To Theses With Abstracts Accepted For Higher Degrees By The Universities Of Great Britain And Ireland And The Council For National Academic Awards
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Author :
language : en
Publisher:
Release Date : 2008
Index To Theses With Abstracts Accepted For Higher Degrees By The Universities Of Great Britain And Ireland And The Council For National Academic Awards written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Dissertations, Academic categories.
Cern Courier
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Author : European Organization for Nuclear Research
language : en
Publisher:
Release Date : 1959
Cern Courier written by European Organization for Nuclear Research and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Nuclear energy categories.
This journal is devoted to the latest research on physics, publishing articles on everything from elementary particle behavior to black holes and the history of the universe.
Physics Briefs
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Author :
language : en
Publisher:
Release Date : 1994
Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Physics categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
The Large Hadron Collider
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Author : Lyndon R. Evans
language : en
Publisher: EPFL Press
Release Date : 2009-01-01
The Large Hadron Collider written by Lyndon R. Evans and has been published by EPFL Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-01-01 with Hadron colliders categories.
Describes the technology and engineering of the Large Hadron collider (LHC), one of the greatest scientific marvels of this young 21st century. This book traces the feat of its construction, written by the head scientists involved, placed into the context of the scientific goals and principles.
Cosmoparticle Physics
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Author : Maxim Yu Khlopov
language : en
Publisher: World Scientific
Release Date : 1999
Cosmoparticle Physics written by Maxim Yu Khlopov and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Science categories.
Since the 1980s the cross-disciplinary, multidimensional field of links between cosmology and particle physics has been widely recognised by theorists, studying cosmology, particle and nuclear physics, gravity, as well as by astrophysicists, astronomers, space physicists, experimental particle and nuclear physicists, mathematicians and engineers.The relationship between cosmology and particle physics is now one of the important topics of discussion at any scientific meeting both on astrophysics and high energy physics.Cosmoparticle physics is the result of the mutual relationship between cosmology and particle physics in their search for physical mechanisms of inflation, baryosynthesis, nonbaryonic dark matter, and for fundamental unity of the natural forces underlying them. The set of nontrivial links between cosmological consequences of particle models and the astrophysical data on matter and radiation in the modern universe maintains cosmoarcheology, testing self-consistently particular predictions of particle models on the base of cosmological scenarios, following from them. Complex analysis of all the indirect cosmological, astrophysical and microphysical phenomena makes cosmoparticle physics the science of the world and renders quantitatively definite the correspondence between its micro- and macroscopic structure.This book outlines the principal ideas of the modern particle theory and cosmology, their mutual relationship and the nontrivial correspondence of their physical and astrophysical effects.
Particle Detectors
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Author : Hermann Kolanoski
language : en
Publisher:
Release Date : 2020
Particle Detectors written by Hermann Kolanoski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Science categories.
Introduction -- Overview, history and concepts -- Interactions of particles with matter -- Movement of charge carriers in electric and magnetic fields -- Signal formation by moving charges -- Non-electronic detectors -- Gas-filled detectors -- Semiconductor detectors -- Track reconstruction and momentum measurement -- Photodetectors -- Cherenkov detectors -- Transition radiation detectors -- Scintillation detectors -- Particle identification -- Calorimeters -- Detectors for cosmic particles, neutrinos and exotic matter -- Signal processing, readout and noise -- Trigger and data acquisition systems -- Appendix A Dosimetry and radioactive sources -- Appendix B Weighting potential of segmented electrodes -- Appendix C Diffusion effects in drift chambers -- Appendix D Ionisation statistics in drift chambers -- Appendix E Position resolution of structured electrodes -- Appendix F Fitting of track models -- Appendix G LPM effect -- Appendix H Laplace transform -- Appendix I Physical noise sources -- Bibliography -- Abbreviations -- Index.