Speaker
Description
The current MiNNLOPS technology enables next-to-next-to-leading order (NNLO) QCD predictions matched to parton showers (NNLO+PS) for heavy-quark pair production in arbitrary kinematics (QQF), within the POWHEG framework. Among QQF processes, Higgs production in association with a heavy-quark pair is particularly relevant for LHC phenomenology. In the case of ttH production, the main bottleneck is the absence of the exact two-loop (double-virtual) contribution. Compared to bbH production, the presence of the large top-quark mass requires a combination of different approximations across distinct kinematic regimes. We present a validation of soft and high-energy approximations at the NLO+PS level and provide first differential results at NNLO+PS, with the estimated double-virtual corrections. Once the exact two-loop amplitude becomes available, the reweighting capabilities of the POWHEG framework will offer a valid path to achieving full NNLO+PS accuracy, without the need for new grid evaluations or event generation.
| Field | Pheno |
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