Springer Theses

Search for New Physics in tt ̅ Final States with Additional Heavy-Flavor Jets with the ATLAS Detector

Authors: Montejo Berlingen, Javier

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  • Nominated as an outstanding PhD thesis by the Autonomous University of Barcelona, Spain 
  • Employs an analysis that is optimally sensitive to the top Yukawa coupling 
  • Provides best limits to date on anomalous four-top production
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eBook $109.00
price for USA in USD (gross)
  • ISBN 978-3-319-41051-7
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Hardcover $149.99
price for USA in USD
  • ISBN 978-3-319-41050-0
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
Softcover $149.99
price for USA in USD
  • ISBN 978-3-319-82253-2
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
About this book

This doctoral thesis focuses on the search for new phenomena in top-antitop quark (tt) final states with additional b-quark jets at the LHC. It uses the full Run 1 dataset collected by the ATLAS experiment in proton-proton collisions at √s=8 TeV. The final state of interest consists of an isolated lepton, a neutrino and at least six jets with at least four b-tagged jets, a challenging experimental signature owing to the large background from tt+heavy-flavor production. This final state is characteristic of ttH production, with the Higgs boson decaying into bb, a process that allows direct probing of the top-Higgs Yukawa coupling. This signature is also present in many extensions of the Standard Model that have been proposed as solutions to the hierarchy problem, such as supersymmetry or composite Higgs models, which predict the pair production of bosonic or fermionic top quark partners, or the anomalous production of four-top-quark events. All these physics processes have been searched for using an ambitious search strategy that has been developed on the basis of a combination of state-of-art theoretical predictions and a sophisticated statistical analysis to constrain in-situ the large background uncertainties. As a result, the most restrictive bounds to date on the above physics processes have been obtained.

About the authors

Javier Montejo studied physics and computer science at the Universidad de Salamanca and obtained a Masters and PhD at the Universidad Autónoma de Barcelona. He studied various aspects of the hierarchy problem in the tt plus heavy flavor final state. The search for ttH constitutes currently the most precise determination of the top Yukawa coupling. Additional searches for beyond-the-standard-model signatures in the same final state have placed stringent constraints on the particles predicted by some of most favored theories that address the hierarchy problem. His current work is focused on supersymmetric models with emphasis on unusual signatures through which supersymmetric particles might have gone unnoticed.

Table of contents (8 chapters)

Table of contents (8 chapters)

Buy this book

eBook $109.00
price for USA in USD (gross)
  • ISBN 978-3-319-41051-7
  • Digitally watermarked, DRM-free
  • Included format: PDF, EPUB
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Hardcover $149.99
price for USA in USD
  • ISBN 978-3-319-41050-0
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
Softcover $149.99
price for USA in USD
  • ISBN 978-3-319-82253-2
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
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Bibliographic Information

Bibliographic Information
Book Title
Search for New Physics in tt ̅ Final States with Additional Heavy-Flavor Jets with the ATLAS Detector
Authors
Series Title
Springer Theses
Copyright
2016
Publisher
Springer International Publishing
Copyright Holder
Springer International Publishing Switzerland
eBook ISBN
978-3-319-41051-7
DOI
10.1007/978-3-319-41051-7
Hardcover ISBN
978-3-319-41050-0
Softcover ISBN
978-3-319-82253-2
Series ISSN
2190-5053
Edition Number
1
Number of Pages
XIV, 283
Number of Illustrations
77 b/w illustrations, 119 illustrations in colour
Topics