© 2011

Discovery of Single Top Quark Production


Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xiv
  2. Dag Gillberg
    Pages 1-2
  3. Dag Gillberg
    Pages 3-12
  4. Dag Gillberg
    Pages 13-23
  5. Dag Gillberg
    Pages 25-33
  6. Dag Gillberg
    Pages 35-60
  7. Dag Gillberg
    Pages 61-77
  8. Dag Gillberg
    Pages 79-110
  9. Back Matter
    Pages 111-142

About this book


This original, outstanding thesis presents the first discovery of single top quark production and documents one of the flagship measurements of the D0 experiment, a collaboration of more than 600 particle physicists from around the world. It describes the first observation of a physical process known as “single top quark production,” which had been sought for more than 10 years before its eventual discovery in 2009.

This thesis describes, in detail, an innovative approach of using Boosted Decision Trees, a machine-learning technique, to observe the tiny single top signal within an otherwise overwhelming background. The final result was published in August 2009 in Physical Review Letters, the most prestigious journal in the field of experimental particle physics. It was further made an “editor’s choice” in that publication and was highlighted in the journal Physics as one of the most interesting and significant results published in all of physics at that time.


Hadron collider boosted decision trees electroweak symmetry breaking electroweak top quark production fundamental particles gauge theories particle interactions particle physics signal background separation single top quark single top quark production

Authors and affiliations

  1. 1.OttawaCanada

Bibliographic information

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