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ZZ + jet production via gluon fusion at the LHC

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Abstract

Pair production of Z bosons in association with a hard jet is an important background for new physics searches at the LHC. The loop-induced gluon-fusion process \( gg \) → ZZg contributes formally only at the next-to-next-to-leading order. Nevertheless, it can get enhanced by the large gluon flux at the LHC, and thus should be taken into account in relevant experimental searches. We provide the details and results of this calculation, which involves the manipulation of rank-5 pentagon integrals. Our results show that the gluon-fusion process can contribute more than 10% to the next-to-leading order QCD result and increases the overall scale uncertainty. Moreover, interference effects between Higgs and non-Higgs contributions can become large in phase-space regions where the Higgs is far off-shell.

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Authors and Affiliations

  1. Karlsruhe Institute of Technology, Institute for Theoretical Physics, 76128, Karlsruhe, Germany

    Francisco Campanario & Michael Rauch

  2. Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland

    Qiang Li & Michael Spira

  3. State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China

    Qiang Li

Authors
  1. Francisco Campanario
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  2. Qiang Li
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  3. Michael Rauch
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  4. Michael Spira
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Correspondence to Francisco Campanario.

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ArXiv ePrint: 1211.5429

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Campanario, F., Li, Q., Rauch, M. et al. ZZ + jet production via gluon fusion at the LHC. J. High Energ. Phys. 2013, 69 (2013). https://doi.org/10.1007/JHEP06(2013)069

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  • DOI: https://doi.org/10.1007/JHEP06(2013)069

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