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Photo of Rikkert Frederix

Rikkert Frederix

Senior lecturer

Photo of Rikkert Frederix

Higher-order QCD effects in the Higgs to ZZ search channel at the LHC

Author

  • Rikkert Frederix
  • Massimiliano Grazzini

Summary, in English

We present a consistent analysis of the signal as well as the irreducible background for the search of the SM Higgs boson in the ZZ decay channel at the LHC. Soft-gluons effects are resummed up to next-to-leading logarithmic accuracy, and the results are compared to those obtained with fixed order calculations and the MC@NLO event generator. The soft-gluon effects are typically modest but should be taken into account when precise predictions are demanded. Our results show that the signal over background ratio can be significantly enhanced with a cut on the transverse momentum pT Z Z of the ZZ pair. We also introduce a fully transverse angular variable that could give information about the CP nature of the Higgs boson.

Publishing year

2008-05-01

Language

English

Pages

353-359

Publication/Series

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Volume

662

Issue

4

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0370-2693