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Handbook of LHC Higgs cross sections: 4. Deciphering the nature of the Higgs sector
This Report summarizes the results of the activities of the LHC Higgs Cross Section Working Group in the period 2014-2016. The main goal of the working group was to present the state-of-the-art of…
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Higgs Physics at the HL-LHC and HE-LHC
The discovery of the Higgs boson in 2012, by the ATLAS and CMS experiments, was a success achieved with only a percent of the entire dataset foreseen for the LHC. It opened a landscape of…
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An automatized algorithm to compute infrared divergent multi-loop integrals
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GoSam-2.0: a tool for automated one-loop calculations within the Standard Model and beyond
TLDR
The version 2.0 of the program package GoSam is presented, which contains improvements in the generation and in the reduction of the amplitudes, performs better in computing time and numerical accuracy, and has an extended range of applicability.
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SecDec: A general program for sector decomposition
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SecDec-3.0: Numerical evaluation of multi-scale integrals beyond one loop
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Automated one-loop calculations with GoSam
We present the program package GoSam which is designed for the automated calculation of one-loop amplitudes for multi-particle processes in renormalisable quantum field theories. The amplitudes,…
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Higgs Boson Pair Production in Gluon Fusion at Next-to-Leading Order with Full Top-Quark Mass Dependence.
TLDR
The calculation of the cross section and invariant mass distribution for Higgs boson pair production in gluon fusion at next-to-leading order (NLO) in QCD allows the validity of various approximations proposed in the literature to be assessed and emphasizes the importance of including the full top-quark mass dependence at NLO.
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Sector Decomposition
Sector decomposition is a constructive method to isolate divergences from parameter integrals occurring in perturbative quantum field theory. We explain the general algorithm in detail and review its…
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The QCD/SM working group: Summary report
TLDR
A variety of tools were further developed, from methods to perform higher order perturbative calculations or various types of resummation, to improvements in the modeling of underlying events and parton showers, and various precise studies of important specific processes were conducted.
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