$ttH$ Anomalous Coupling in Double Higgs Production

Kenji Nishiwaki; Saurabh Niyogi; Ambresh Shivaji

doi:10.1007/JHEP04(2014)011

$ttH$ Anomalous Coupling in Double Higgs Production

High Energy Physics - Phenomenology 2015-06-17 v2 High Energy Physics - Experiment

Authors: Kenji Nishiwaki , Saurabh Niyogi , Ambresh Shivaji

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Abstract

We study the effects of top-Higgs anomalous coupling in the production of a pair of Higgs boson via gluon fusion at the Large Hadron Collider (LHC). The introduction of anomalous $ttH$ coupling can alter the hadronic double Higgs boson cross section and can lead to characteristic changes in certain kinematic distributions. We perform a global analysis based on available LHC data on the Higgs to constrain the parameters of $ttH$ anomalous coupling. Possible overlap of the predictions due to anomalous $ttH$ coupling with those due to anomalous trilinear Higgs coupling is also studied. We briefly discuss the effect of the anomalous $ttH$ coupling on the $HZ$ production via gluon fusion which is one of the main backgrounds in the $HH \to \gamma\gamma b {\bar b}$ channel.

Keywords

higgs boson production anomalous gauge couplings

Cite

@article{arxiv.1309.6907,
  title  = {$ttH$ Anomalous Coupling in Double Higgs Production},
  author = {Kenji Nishiwaki and Saurabh Niyogi and Ambresh Shivaji},
  journal= {arXiv preprint arXiv:1309.6907},
  year   = {2015}
}

Comments

22 pages, 22 figures, 4 tables. Text reorganized, main results unchanged, new plots and references added. Journal version

$ttH$ Anomalous Coupling in Double Higgs Production

Abstract

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