Springer Theses

Search for Scalar Top Quarks and Higgsino-Like Neutralinos

SUSY Hunting With a “Soft” Lepton at the LHC

Authors: Nobe, Takuya

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  • Nominated as an outstanding contribution by Tokyo Institute of Technology’s Physics Department in 2015
  • Describes the theoretical background of a supersymmetry model, focusing on a “natural” scenario, in light of the latest experimental results
  • Summarizes the latest results of searches for a scalar top quark with ATLAS
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イーブック ¥13,911
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  • ISBN 978-981-10-0003-4
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ハードカバー ¥17,389
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  • ISBN 978-981-10-0001-0
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  • ISBN 978-981-10-9061-5
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この書籍について

This book reports a search for theoretically natural supersymmetry (SUSY) at the Large Hadron Collider (LHC). The data collected with the ATLAS detector in 2012 corresponding to 20 /fb of an integrated luminosity have been analyzed for stop pair production in proton–proton collisions at a center-of-mass energy of 8 TeV at the Large Hadron Collider (LHC) in the scenario of the higgsino-like neutralino.

The author focuses on stop decaying into a bottom quark and chargino. In the scenario of the higgsino-like neutralino, the mass difference between charginos and neutralinos (Δm) is expected to be small, and observable final-state particles are likely to have low-momentum (soft). The author develops a dedicated analysis with a soft lepton as a probe of particles from chargino decay, which

suppresses the large amount of backgrounds. As a result of the analysis, no significant SUSY signal is observed. The 95% confidence-level exclusion limits are set to masses of stop and neutralino assuming Δm = 20 GeV. The region with ΔM (the mass difference between stop and neutralino) < 70 GeV is excluded for the first time at stop mass of less than 210 GeV. The author also excludes the signals with ΔM > 120 GeV up to 600 GeV of stop mass with neutralino mass of less than 280 GeV. The author clearly shows very few remaining parameter spaces for light stop (e.g., topology of stop decay is extremely similar to the SM top quark) by combining his results and previous ATLAS analyses. His results provide a strong constraint to searches for new physics in the future.

Table of contents (8 chapters)

Table of contents (8 chapters)

書籍の購入

イーブック ¥13,911
価格の適用国: Japan (日本円価格は個人のお客様のみ有効) (小計)
  • ISBN 978-981-10-0003-4
  • ウォーターマーク付、 DRMフリー
  • ファイル形式: EPUB, PDF
  • どの電子書籍リーダーからでもすぐにお読みいただけます。
  • ご購入後、すぐにダウンロードしていただけます。
ハードカバー ¥17,389
価格の適用国: Japan (日本円価格は個人のお客様のみ有効) (小計)
  • ISBN 978-981-10-0001-0
  • 個人のお客様には、世界中どこでも配送料無料でお届けします。
  • Usually dispatched within 3 to 5 business days.
ソフトカバー ¥16,847
価格の適用国: Japan (日本円価格は個人のお客様のみ有効) (小計)
  • ISBN 978-981-10-9061-5
  • 個人のお客様には、世界中どこでも配送料無料でお届けします。
  • Usually dispatched within 3 to 5 business days.
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書誌情報

Bibliographic Information
Book Title
Search for Scalar Top Quarks and Higgsino-Like Neutralinos
Book Subtitle
SUSY Hunting With a “Soft” Lepton at the LHC
Authors
Series Title
Springer Theses
Copyright
2016
Publisher
Springer Singapore
Copyright Holder
Springer Science+Business Media Singapore
イーブック ISBN
978-981-10-0003-4
DOI
10.1007/978-981-10-0003-4
ハードカバー ISBN
978-981-10-0001-0
ソフトカバー ISBN
978-981-10-9061-5
Series ISSN
2190-5053
Edition Number
1
Number of Pages
XII, 224
Number of Illustrations
103 b/w illustrations, 19 illustrations in colour
Topics