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Soft gluon resummation in the signal-background interference process of gg(→ h) → ZZ

  • Chong Sheng Li
  • Hai Tao Li
  • Ding Yu Shao
  • Jian WangEmail author
Open Access
Regular Article - Theoretical Physics

Abstract

We present a precise theoretical prediction for the signal-background interference process of gg(→ h) → ZZ, which is useful to constrain the Higgs boson decay width and to measure Higgs couplings to the SM particles. The approximate NNLO K-factor is in the range of 2.05 − 2.45 (1.85 − 2.25), depending on M ZZ , at the 8 (13) TeV LHC. And the soft gluon resummation can increase the approximate NNLO result by about 10% at both the 8 TeV and 13 TeV LHC. The theoretical uncertainties including the scale, uncalculated multi-loop amplitudes of the background and PDF+αs are roughly \( \mathcal{O}\left(10\%\right) \) at NNLL. We also confirm that the approximate K-factors in the interference and the pure signal processes are the same.

Keywords

Higgs Physics Resummation QCD 

Notes

Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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Copyright information

© The Author(s) 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Chong Sheng Li
    • 1
    • 2
  • Hai Tao Li
    • 1
  • Ding Yu Shao
    • 3
  • Jian Wang
    • 4
    Email author
  1. 1.School of Physics and State Key Laboratory of Nuclear Physics and TechnologyPeking UniversityBeijingChina
  2. 2.Center for High Energy PhysicsPeking UniversityBeijingChina
  3. 3.Albert Einstein Center for Fundamental Physics, Institut für Theoretische PhysikUniversität BernBernSwitzerland
  4. 4.PRISMA Cluster of Excellence & Mainz Institute for Theoretical PhysicsJohannes Gutenberg UniversityMainzGermany

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