Table 1 Signal and background processes and their corresponding MC generators used in this analysis.The acronyms ME and PS stand for matrix element and parton shower, respectively. The cross-section order refers to the order of the cross-section calculation used for process normalisation in QCD, unless otherwise stated, with ((N)N)LO and ((N)N)LL standing for ((next-to-)next-to-)leading order and ((next-to-)next-to-)leading log, respectively
Process | ME generator | ME PDF | PS and | Tune | Cross-section |
---|---|---|---|---|---|
hadronisation | order | ||||
\(qq \rightarrow VH\) \((H \rightarrow c{\bar{c}}/b{\bar{b}})\) | NNPDF3.0nlo [58] | PYTHIA8.212 [59] | AZNLO [60] | ||
+ GoSam[66] | |||||
\(gg \rightarrow ZH\) | Powheg Boxv2 | NNPDF3.0nlo | PYTHIA8.212 | AZNLO | |
\((H \rightarrow c{\bar{c}}/b{\bar{b}})\) | |||||
\(t{\bar{t}}\) | Powheg Boxv2 [71] | NNPDF3.0nlo | PYTHIA8.230 | A14 [72] | NNLO |
t/s-channel | Powheg Boxv2 [80] | NNPDF3.0nlo | PYTHIA8.230 | A14 | |
single top | |||||
Wt-channel | Powheg Boxv2 [83] | NNPDF3.0nlo | PYTHIA8.230 | A14 | Approx. |
single top | |||||
V+ jets | NNPDF3.0nnlo [58] | Sherpa2.2.1 | Default | NNLO [86] | |
\(qq \rightarrow VV\) | Sherpa2.2.1 | NNPDF3.0nnlo | Sherpa2.2.1 | Default | NLO |
\(gg \rightarrow VV\) | Sherpa2.2.2 | NNPDF3.0nnlo | Sherpa2.2.2 | Default | NLO |