Top-Quark Pair Production Cross Sections and Calibration of the Top-Quark Monte-Carlo Mass

Measurements Performed with the CMS Detector Using LHC Run I Proton-Proton Collision Data

  • Jan Kieseler

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xiii
  2. Jan Kieseler
    Pages 1-5
  3. Jan Kieseler
    Pages 27-37
  4. Jan Kieseler
    Pages 39-55
  5. Jan Kieseler
    Pages 83-102
  6. Jan Kieseler
    Pages 117-121
  7. Back Matter
    Pages 123-167

About this book


This thesis presents the first experimental calibration of the top-quark Monte-Carlo mass.  It also provides the top-quark mass-independent and most precise top-quark pair production cross-section measurement to date. The most precise measurements of the top-quark mass obtain the top-quark mass parameter (Monte-Carlo mass) used in simulations, which are partially based on heuristic models. Its interpretation in terms of mass parameters used in theoretical calculations, e.g. a running or a pole mass, has been a long-standing open problem with far-reaching implications beyond particle physics, even affecting conclusions on the stability of the vacuum state of our universe.

In this thesis, this problem is solved experimentally in three steps using data obtained with the compact muon solenoid (CMS) detector. The most precise top-quark pair production cross-section measurements to date are performed. The Monte-Carlo mass is determined and a new method for extracting the top-quark mass from theoretical calculations is presented. Lastly, the top-quark production cross-sections are obtained – for the first time – without residual dependence on the top-quark mass, are interpreted using theoretical calculations to determine the top-quark running- and pole mass with unprecedented precision, and are fully consistently compared with the simultaneously obtained top-quark Monte-Carlo mass.


Calibration of the Top-Quark MC Mass Measurement of the Top-Quark Running Mass Top-Quark Pole Mass Extraction Dileptonic Top-Quark Decay Four-Loop QCD Calculations

Authors and affiliations

  • Jan Kieseler
    • 1
  1. 1.DESY-CMSHamburgGermany

Bibliographic information