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- W2897940064 abstract "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 amplitudes in terms of a small Higgs transverse momentum. This approach gives a very good approximation (better than per mille) of the partonic cross section in the center-of-mass energy region $sqrt{stackrel{^}{s}}ensuremath{lesssim}750text{ }text{ }mathrm{GeV}$, where $ensuremath{sim}95%$ of the total hadronic cross section is concentrated. The presented method is general and can be applied in a straightforward way to the computation of virtual higher-order corrections to other $2ensuremath{rightarrow}2$ processes, representing an improvement with respect to calculations based on heavy mass expansions." @default.
- W2897940064 created "2018-10-26" @default.
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- W2897940064 date "2018-10-19" @default.
- W2897940064 modified "2023-10-04" @default.
- W2897940064 title "Analytical Method for Next-to-Leading-Order QCD Corrections to Double-Higgs Production" @default.
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- W2897940064 doi "https://doi.org/10.1103/physrevlett.121.162003" @default.
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