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Searching for Squarks

in Compressed States and States with Jets from Charm Quarks with the Atlas Detector

  • Book
  • © 2020

Overview

Authors:
  1. Samuel Jones

    1. Department of Physics and Astronomy, University of Sussex, Brighton, UK

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  • Nominated as an outstanding Ph.D. thesis by the University of Sussex, Brighton, United Kingdom
  • Presents searches for the supersymmetric partner of the quark, the squark, in "compressed scenarios
  • Develops a novel technique for reconstructing low momentum b-hadrons

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (7 chapters)

  1. Front Matter

    Pages i-xviii
    Download chapter PDF

  2. Introduction

    • Samuel Jones
    Pages 1-3

  3. Theoretical Background

    • Samuel Jones
    Pages 5-38

  4. The ATLAS Experiment

    • Samuel Jones
    Pages 39-59

  5. Data Acquisition and Reconstruction

    • Samuel Jones
    Pages 61-95

  6. Search for SUSY in Final States with Jets from Charm Quarks

    • Samuel Jones
    Pages 97-157

  7. Soft b-tagging in Compressed SUSY Scenarios

    • Samuel Jones
    Pages 159-180

  8. Conclusion

    • Samuel Jones
    Pages 181-182

  9. Back Matter

    Pages 183-223
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Keywords

About this book

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.

Authors and Affiliations

  • Department of Physics and Astronomy, University of Sussex, Brighton, UK

    Samuel Jones

Bibliographic Information

  • Book Title: Searching for Squarks

  • Book Subtitle: in Compressed States and States with Jets from Charm Quarks with the Atlas Detector

  • Authors: Samuel Jones

  • Series Title: Springer Theses

  • DOI: https://doi.org/10.1007/978-3-030-54288-7

  • Publisher: Springer Cham

  • eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)

  • Copyright Information: The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2020

  • Hardcover ISBN: 978-3-030-54287-0Published: 28 August 2020

  • Softcover ISBN: 978-3-030-54290-0Published: 28 August 2021

  • eBook ISBN: 978-3-030-54288-7Published: 27 August 2020

  • Series ISSN: 2190-5053

  • Series E-ISSN: 2190-5061

  • Edition Number: 1

  • Number of Pages: XVIII, 223

  • Number of Illustrations: 27 b/w illustrations, 109 illustrations in colour

  • Topics: Elementary Particles, Quantum Field Theory, Measurement Science and Instrumentation

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