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Overview"This thesis focuses on searches for squarks with the ATLAS detector in ""compressed"" scenarios where the scalar top is very close in mass to the lightest supersymmetric particle. These models are theoretically appealing because the presence of a quasi-degenerate scalar top enhances the self-annihilation cross-section of the lightest supersymmetric particle, acting therefore as a regulator of the dark matter relic density. Two main analyses are presented: the first is a search for scalar tops decaying to charm quarks. The identification of jets originating from the charm quark is very challenging due to its short lifetime. The calibration of tools for charm-tagging has paved the way to measuring the decay of the Higgs boson to pairs of charm quarks. The second analysis presented is the development of a novel technique for reconstructing low momentum b-hadrons. This tool has enabled the ATLAS collaboration to explore topologies that were previously inaccessible." Full Product DetailsAuthor: Samuel JonesPublisher: Springer Nature Switzerland AG Imprint: Springer Nature Switzerland AG Edition: 1st ed. 2020 Weight: 0.379kg ISBN: 9783030542900ISBN 10: 3030542904 Pages: 223 Publication Date: 28 August 2021 Audience: Professional and scholarly , Professional & Vocational Format: Paperback Publisher's Status: Active Availability: Manufactured on demand  We will order this item for you from a manufactured on demand supplier. Table of ContentsIntroduction.- Theoretical Background.- The ATLAS Experiment.- Data Acquisition and Reconstruction.- Search for SUSY in Final States with Jets from Charm Quarks.- Soft b-tagging in Compressed SUSY Scenarios.- Conclusion.- Appendix.ReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |
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