Fr. 134.00

Searching for Squarks - in Compressed States and States with Jets from Charm Quarks with the Atlas Detector

English · Paperback / Softback

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Description

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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.

List of contents

Introduction.- 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.

Product details

Authors Samuel Jones
Publisher Springer, Berlin
 
Languages English
Product format Paperback / Softback
Released 11.09.2021
 
EAN 9783030542900
ISBN 978-3-0-3054290-0
No. of pages 223
Dimensions 155 mm x 13 mm x 235 mm
Illustrations XVIII, 223 p. 136 illus., 109 illus. in color.
Series Springer Theses
Subject Natural sciences, medicine, IT, technology > Physics, astronomy > Theoretical physics

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