Springer Theses

Search for the Standard Model Higgs Boson in the H → ZZ → l + l - qq Decay Channel at CMS

Authors: Pandolfi, Francesco

  • Nominated as an outstanding PhD thesis by the University of Rome La Sapienza
  • Describes novel techniques, such as the analysis tool implemented to distinguish between jets originated by quarks and gluons
  • Offers a complete and highly readable description of a proton-proton collider analysis accessible even to non-specialists
see more benefits

Buy this book

eBook $99.00
price for USA (gross)
  • ISBN 978-3-319-00903-2
  • Digitally watermarked, DRM-free
  • Included format: EPUB, PDF
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Hardcover $129.00
price for USA
  • ISBN 978-3-319-00902-5
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
Rent the ebook  
  • Rental duration: 1 or 6 month
  • low-cost access
  • online reader with highlighting and note-making option
  • can be used across all devices
About this book

The theoretical foundations of the Standard Model of elementary particles relies on the existence of the Higgs boson, a particle which has been revealed for the first time by the experiments run at the Large Hadron Collider (LHC) in 2012. As the Higgs boson is an unstable particle, its search strategies were based on its decay products.
In this thesis, Francesco Pandolfi conducted a search for the Higgs boson in the H → ZZ → l + l - qq Decay Channel with 4.6 fb -1 of 7 TeV proton-proton collision data collected by the Compact Muon Solenoid (CMS) experiment. The presence of jets in the final state poses a series of challenges to the experimenter: both from a technical point of view, as jets are complex objects and necessitate of ad-hoc reconstruction techniques, and from an analytical one, as backgrounds with jets are copious at hadron colliders, therefore analyses must obtain high degrees of background rejection in order to achieve competitive sensitivity. This is accomplished by following two directives: the use of an angular likelihood discriminant, capable of discriminating events likely to originate from the decay of a scalar boson from non-resonant backgrounds, and by using jet parton flavor tagging, selecting jets compatible with quark hadronization and discarding jets more likely to be initiated by gluons.
The events passing the selection requirements in 4.6 fb -1 of data
collected by the CMS detector are examined, in the search of a possible signal compatible with the decay of a heavy Higgs boson. The thesis describes the statistical tools and the results of this analysis. This work is a paradigm for studies of the Higgs boson with final states with jets. The non-expert physicists will enjoy a complete and eminently readable description of a proton-proton collider analysis. At the same time, the expert reader will learn the details of the  searches done with jets at CMS.

About the authors

Francesco Pandolfi, after having obtained his Laurea Triennale (2003) and Specialistica (2008) in Fisica with full grades cum laude, received his PhD from the Sapienza University of Rome in 2012 with this Thesis. Born in 1984, Rome, he has already more than 200 publications to his name. Dr Pandolfi is currently affiliated to ETH, Institute for Particle Physics, Zurich, Switzerland.

Table of contents (7 chapters)

  • The Hunt for the Higgs Boson

    Pandolfi, Francesco

    Pages 1-15

  • The Large Hadron Collider and the CMS Experiment

    Pandolfi, Francesco

    Pages 17-35

  • Jet Reconstruction and Calibration

    Pandolfi, Francesco

    Pages 37-67

  • Event Selection

    Pandolfi, Francesco

    Pages 69-101

  • Systematic Uncertainties

    Pandolfi, Francesco

    Pages 103-116

Buy this book

eBook $99.00
price for USA (gross)
  • ISBN 978-3-319-00903-2
  • Digitally watermarked, DRM-free
  • Included format: EPUB, PDF
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Hardcover $129.00
price for USA
  • ISBN 978-3-319-00902-5
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
Rent the ebook  
  • Rental duration: 1 or 6 month
  • low-cost access
  • online reader with highlighting and note-making option
  • can be used across all devices
Loading...

Recommended for you

Loading...

Bibliographic Information

Bibliographic Information
Book Title
Search for the Standard Model Higgs Boson in the H → ZZ → l + l - qq Decay Channel at CMS
Authors
Series Title
Springer Theses
Copyright
2014
Publisher
Springer International Publishing
Copyright Holder
Springer International Publishing Switzerland
eBook ISBN
978-3-319-00903-2
DOI
10.1007/978-3-319-00903-2
Hardcover ISBN
978-3-319-00902-5
Series ISSN
2190-5053
Edition Number
1
Number of Pages
XV, 128
Topics