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Theoretical and Experimental Approaches to Dark Energy and the Cosmological Constant Problem

  • Book
  • © 2018

Overview

Authors:
  1. Ahmad Borzou

    1. EUCOS-CASPAR, Physics Department, Baylor University, Waco, USA

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  • Nominated as an outstanding Ph.D. thesis by Baylor University, Texas
  • Explores both theoretical and experimental solutions to the cosmological constant problem
  • Summarizes and provides a review of several widely-discussed, recent theories relating to dark energy and the cosmological constant
  • Describes a novel method to estimate one of the most significant backgrounds in the search for supersymmetry

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

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Table of contents (8 chapters)

  1. Front Matter

    Pages i-xv
    Download chapter PDF

  2. Introduction

    • Ahmad Borzou
    Pages 1-3

  3. Dark Energy

    • Ahmad Borzou
    Pages 5-16

  4. A Lorentz Gauge Theory of Gravity

    • Ahmad Borzou
    Pages 17-35

  5. Standard Model and Supersymmetry

    • Ahmad Borzou
    Pages 37-46

  6. The Large Hadron Collider

    • Ahmad Borzou
    Pages 47-52

  7. The Compact Muon Solenoid

    • Ahmad Borzou
    Pages 53-71

  8. Search for Supersymmetry in the Multijet and Missing Transverse Momentum Channel in pp Collisions at 13 TeV

    • Ahmad Borzou
    Pages 73-105

  9. Summary

    • Ahmad Borzou
    Pages 107-108

  10. Back Matter

    Pages 109-111
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Keywords

About this book

This thesis represents a unique mix of theoretical work discussing the Lorentz theory of gravity and experimental work searching for supersymmetry with the Compact Muon Solenoid experiment at the Large Hadron Collider. It begins by reviewing a set of widely-discussed theoretical solutions to the cosmological constant problem, including a natural solution provided by the recently developed Lorentz gauge theory of gravity. The Schwartzschild metric, de Sitter space, and quantum versions of the theory are also discussed. The thesis then looks to supersymmetry for an alternative solution. The idea behind supersymmetry is reviewed and an experimental search for supersymmetry is presented. A major contribution was to estimate one of the most significant backgrounds in this search, which arises from top-antitop quark pair production or W boson production in association with multiple jets where the W boson decays into the hadronically-decaying tau leptons and neutrinos. This background was estimated through a novel method involving kinematically analogous events but including a well-measured muon. This search significantly extends limits on supersymmetric partners of gluons from previous searches.

Authors and Affiliations

  • EUCOS-CASPAR, Physics Department, Baylor University, Waco, USA

    Ahmad Borzou

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