パートン衝突でのトップクォーク対生成・崩壊における終状態レプトン運動量分布と非標準トップ相互作用  [in Japanese] Anomalous top-couplings and momentum distributions of the final-lepton from tt productions/decays in parton collisions  [in Japanese]

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Author(s)

    • 日置 善郎 Hioki Zenro
    • 徳島大学大学院ソシオアーツ&サイエンス研究部 Institute of Theoretical Physics, University of Tokushima

Abstract

We study the momentum distributions of the final-state charged lepton in parton-parton collisions q¯q, gg →t¯t → +X ( = e or μ), considering their application to actual experimental-data analyses at high-energyhadron colliders, i.e., Tevatron and Large Hadron Collider (LHC). Assuming general anomalous t¯tg + t¯tggand tbW couplings, we derive analytical formulas for the above distributions based on Kawasaki-Shirafuji-Tsaiformalism. We there take into account all the terms on the former-coupling parameters while up to the linearterms about the latter. We then calculate the lepton energy- and angular-distributions to clarify how theyare affected by the anomalous couplings, and also search, through the total cross sections, for the parameterrange where quadratic (or higher-order) terms of nonstandard QCD couplings can safely be neglected andconsequently we can carry out the optimal-observable analysis properly for estimating the expected statisticaluncertainties in parameter measurements.

Journal

  • Natural science research, Faculty of Integrated Arts and Sciences, the University of Tokushima

    Natural science research, Faculty of Integrated Arts and Sciences, the University of Tokushima 24, 33-46, 2010

    The University of Tokushima

Codes

  • NII Article ID (NAID)
    110008703910
  • NII NACSIS-CAT ID (NCID)
    AN10065859
  • Text Lang
    JPN
  • Article Type
    departmental bulletin paper
  • Journal Type
    大学紀要
  • ISSN
    0914-6385
  • NDL Article ID
    023446558
  • NDL Call No.
    Z14-1395
  • Data Source
    NDL  NII-ELS  IR 
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