Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP04(2022)079
Keywords
Higher-Order Perturbative Calculations; Parton Shower; Top Quark
Categories
Funding
- National Science Foundation
- NSF [PHY-1748958]
- Fondazione Cariplo and Regione Lombardia [2017-2070]
- INFN
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This paper discusses the production of a pair of heavy quarks and introduces the MINNLOPS method to match NNLO calculations with parton showers. An event generator is constructed and its implementation details in a parton shower Monte Carlo framework are discussed. The results show that including the tree-level decays of the top quarks and spin-correlation effects, the simulated data fit well with the experimental measurements.
We consider the production of a pair of heavy quarks and illustrate the derivation of the MINNLOPS method to match next-to-next-to-leading order calculations with parton showers (NNLO+PS) for this class of processes. As a first application, we construct an event generator for the fully differential simulation of hadronic top-quark pair production at NNLO+PS and discuss all details of its implementation in a parton shower Monte Carlo framework. We present new phenomenological results for the Large Hadron Collider obtained by including the tree-level decays of the top quarks, while accounting for spin-correlation effects. A comprehensive comparison to LHC measurements shows an excellent description of experimental data across multiple hadronic and leptonic particle-level observables. The computer code is available for download within the POWHEG-BOX.
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