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OverviewThis thesis presents the first experimental calibration of the top-quark Monte-Carlo mass. It also provides the top-quark mass-independent and most precise top-quark pair production cross-section measurement to date. The most precise measurements of the top-quark mass obtain the top-quark mass parameter (Monte-Carlo mass) used in simulations, which are partially based on heuristic models. Its interpretation in terms of mass parameters used in theoretical calculations, e.g. a running or a pole mass, has been a long-standing open problem with far-reaching implications beyond particle physics, even affecting conclusions on the stability of the vacuum state of our universe. In this thesis, this problem is solved experimentally in three steps using data obtained with the compact muon solenoid (CMS) detector. The most precise top-quark pair production cross-section measurements to date are performed. The Monte-Carlo mass is determined and a new method forextracting the top-quark mass from theoretical calculations is presented. Lastly, the top-quark production cross-sections are obtained – for the first time – without residual dependence on the top-quark mass, are interpreted using theoretical calculations to determine the top-quark running- and pole mass with unprecedented precision, and are fully consistently compared with the simultaneously obtained top-quark Monte-Carlo mass. Full Product DetailsAuthor: Jan KieselerPublisher: Springer International Publishing AG Imprint: Springer International Publishing AG Edition: 1st ed. 2016 Dimensions: Width: 15.50cm , Height: 1.30cm , Length: 23.50cm Weight: 4.026kg ISBN: 9783319400044ISBN 10: 3319400045 Pages: 167 Publication Date: 23 June 2016 Audience: Professional and scholarly , Professional & Vocational Format: Hardback Publisher's Status: Active Availability: Manufactured on demand We will order this item for you from a manufactured on demand supplier. Table of ContentsIntroduction.- Top Quark Production and Decay in Proton-Proton Collisions.- The LHC and the CMS Experiment.- Event Reconstruction and Selection.- Measurement of the Top-Quark Pair Production Cross Section.- Extraction of the Top-Quark Mass.- Calibration of the Top-Quark Monte-Carlo Mass.- Summary and Conclusions.ReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |