Higgs pair production at the LHC with NLO and parton-shower effects
(2014) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 732, p. 142-149 (2014)
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- Abstract
- We present predictions for the SM-Higgs-pair production channels of relevance at the LHC: gluon–gluon fusion, VBF, and top-pair, W, Z and single-top associated production. All these results are at the NLO accuracy in QCD, and matched to parton showers by means of the MC@NLO method; hence, they are fully differential. With the exception of the gluon–gluon fusion process, for which a special treatment is needed in order to improve upon the infinite-top-mass limit, our predictions are obtained in a fully automatic way within the publicly available MadGraph5_aMC@NLO framework. We show that for all channels in general, and for gluon–gluon fusion and top-pair associated production in particular, NLO corrections reduce the theoretical uncertainties, and are needed in order to arrive at reliable predictions for total rates as well as for distributions.
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Citations
Frederix, R., Frixione, S., Hirschi, V., Maltoni, F., Mattelaer, O., Torrielli, P., Vryonidou, E., & Zaro, M. (2014). Higgs pair production at the LHC with NLO and parton-shower effects. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 732, 142-149. https://doi.org/10.1016/j.physletb.2014.03.026 (Original work published 2014)