NNLO predictions with nonlocal subtractions and fiducial power corrections in GENEVA
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| Format: | Preprint |
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2025
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| _version_ | 1866913795460300800 |
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| author | Alioli, Simone Billis, Georgios Broggio, Alessandro Stagnitto, Giovanni |
| author_facet | Alioli, Simone Billis, Georgios Broggio, Alessandro Stagnitto, Giovanni |
| contents | We present the implementation of next-to-next-to-leading order (NNLO) QCD fully-differential corrections within the GENEVA framework, for both colour-singlet and colour-singlet+jet processes at hadron colliders, by employing a nonlocal subtraction approach. In particular, we discuss the implementation details and the challenges that arise when utilizing a dynamical infrared cutoff parameter. Additionally, we combine the subtraction with the projection-to-Born method in order to include fiducial power corrections. As a test case, we provide predictions for Drell-Yan and $Z$+jet production at the LHC, using $N$-jettiness as resolution variable. We validate the NNLO corrections of GENEVA against NNLOJET finding excellent agreement. Finally, we discuss how to extend our method to calculate the N$^3$LO QCD fully-differential corrections to colour-singlet production at hadron colliders. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_11357 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | NNLO predictions with nonlocal subtractions and fiducial power corrections in GENEVA Alioli, Simone Billis, Georgios Broggio, Alessandro Stagnitto, Giovanni High Energy Physics - Phenomenology High Energy Physics - Experiment We present the implementation of next-to-next-to-leading order (NNLO) QCD fully-differential corrections within the GENEVA framework, for both colour-singlet and colour-singlet+jet processes at hadron colliders, by employing a nonlocal subtraction approach. In particular, we discuss the implementation details and the challenges that arise when utilizing a dynamical infrared cutoff parameter. Additionally, we combine the subtraction with the projection-to-Born method in order to include fiducial power corrections. As a test case, we provide predictions for Drell-Yan and $Z$+jet production at the LHC, using $N$-jettiness as resolution variable. We validate the NNLO corrections of GENEVA against NNLOJET finding excellent agreement. Finally, we discuss how to extend our method to calculate the N$^3$LO QCD fully-differential corrections to colour-singlet production at hadron colliders. |
| title | NNLO predictions with nonlocal subtractions and fiducial power corrections in GENEVA |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2504.11357 |