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Analytical Method for Next-to-Leading-Order QCD Corrections to Double-Higgs Production (2018)
Journal Article
Bonciani, R., Degrassi, G., Giardino, P. P., & Gröber, R. (2018). Analytical Method for Next-to-Leading-Order QCD Corrections to Double-Higgs Production. Physical Review Letters, 121(16), Article 162003. https://doi.org/10.1103/physrevlett.121.162003

We propose a new method to calculate analytically higher-order perturbative corrections and we apply it to the calculation of the two-loop virtual corrections to Higgs pair production through gluon fusion. The method is based on the expansion of the... Read More about Analytical Method for Next-to-Leading-Order QCD Corrections to Double-Higgs Production.

Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter (2018)
Journal Article
Chala, M., Gröber, R., & Spannowsky, M. (2018). Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter. Journal of High Energy Physics, 2018(3), Article 040. https://doi.org/10.1007/jhep03%282018%29040

Many composite Higgs models predict the existence of vector-like quarks with masses outside the reach of the LHC, e.g. m Q ≳ 2 TeV, in particular if these models contain a dark matter candidate. In such models the mass of the new resonances is bounde... Read More about Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter.

Reconstruction of top-quark mass effects in Higgs pair production and other gluon-fusion processes (2018)
Journal Article
Gröber, R., Maier, A., & Rauh, T. (2018). Reconstruction of top-quark mass effects in Higgs pair production and other gluon-fusion processes. Journal of High Energy Physics, 2018(3), Article 020. https://doi.org/10.1007/jhep03%282018%29020

We propose a novel method for the treatment of top-quark mass effects in the production of H(∗), HH, HZ and ZZ final states in gluon fusion. We show that it is possible to reconstruct the full top-quark mass dependence of the virtual amplitudes from... Read More about Reconstruction of top-quark mass effects in Higgs pair production and other gluon-fusion processes.