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This PhD thesis focuses on the search for flavor-changing neutral currents in the decay of a top quark to an up-type quark (q = u, c) and the Standard Model Higgs boson, where the Higgs boson decays to bb. Further, the thesis presents the combination of this search for top quark pair events with other ATLAS searches – in the course of which the most restrictive bounds to date on tqH interactions were obtained. Following on from the discovery of the Higgs boson, it is particularly important to measure the Yukawa couplings of the Standard Model fermions; these parameters may provide crucial insights to help solve the flavor puzzle and may help reveal the presence of new physics before it is directly observed in experiments.
The work presented in this PhD dissertation is the first search at CMS for Higgs bosons produced in association with top quarks (ttH) in a final state consisting of only jets. The results presented in this book uncover a new class of ttH events that will help us elucidate our understanding of the Yukawa sector interactions between the Higgs boson and the top quark. Despite this being the most common decay signature for ttH, a large contamination of SM backgrounds makes it the most challenging for extracting a signal from data. The PhD thesis presents many sophisticated tools and techniques that were developed in order to overcome these challenges. These tools pave the way for future analyses to investigate other standard model and beyond-standard model physics.
The latest of the 'Lepton Photon' symposium, one of the well-established series of meetings in the high-energy physics community, was successfully organized at the South Campus of Sun Yat-sen University, Guangzhou, China, from August 7-12, 2017, where physicists around the world gathered to discuss the latest advancements in the research field.This proceedings volume of the Lepton Photon 2017 collects contributions by the plenary session speakers and the posters' presenters, which cover the latest results in particle physics, nuclear physics, astrophysics, cosmology, and plans for future facilities.
Physicians are under increasing pressure to provide quality health care in the most cost-effective way possible. The escalating costs of orthopedic care are driving the need to base clinical decision making on evidence-based data that will help physicians provide optimal care to every patient. Evidence-based medicine is the future of orthopedic surgery. In a world where the quality of surgical outcomes will be increasingly measured, evidence-based data will heavily guide decision making in orthopedic trauma. Orthopedic Traumatology: An Evidence-Based Approach provides the reader with a focused and comprehensive review of the literature surrounding the management of the orthopedic trauma patient. The book centers around clinical scenarios with each chapter based on a specific case. Renowned orthopedic trauma surgeons from across the country serve as contributing authors, writing based on these scenarios and giving their expert opinions on management while using data as their guide. Each chapter describes and summarizes the data, but achieves this objective in a case-based format. Each case is brief, but includes relevant imaging. The case scenarios are heavily weighted toward treatment of more controversial injuries. As there is currently no book on the market that focuses solely on orthopedic trauma and evidence-based medicine, this book is sure to be a useful reference for residents and practicing physicians alike.