Combination of aN$^3$LO PDFs and implications for Higgs production cross-sections at the LHC
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Cridge, Thomas Harland-Lang, Lucian A. McGowan, Jamie Thorne, Robert S. Ball, Richard D. Candido, Alessandro Carrazza, Stefano Cruz-Martinez, Juan Del Debbio, Luigi Forte, Stefano Hekhorn, Felix Magni, Giacomo Nocera, Emanuele R. Rabemananjara, Tanjona R. Rojo, Juan Stegeman, Roy Ubiali, Maria |
| author_facet | Cridge, Thomas Harland-Lang, Lucian A. McGowan, Jamie Thorne, Robert S. Ball, Richard D. Candido, Alessandro Carrazza, Stefano Cruz-Martinez, Juan Del Debbio, Luigi Forte, Stefano Hekhorn, Felix Magni, Giacomo Nocera, Emanuele R. Rabemananjara, Tanjona R. Rojo, Juan Stegeman, Roy Ubiali, Maria |
| contents | We discuss how the two existing approximate N$^3$LO (aN$^3$LO) sets of parton distributions (PDFs) from the MSHT20 and NNPDF4.0 series can be combined for LHC phenomenology, both in the pure QCD case and for the QCD$\otimes$QED sets that include the photon PDF. Using the resulting combinations, we present predictions for the total inclusive cross-section for Higgs production in gluon fusion, vector boson fusion, and associated production at the LHC Run-3. For the gluon fusion and vector boson fusion channels, the corrections that arise when using correctly matched aN$^3$LO PDFs with N$^3$LO cross section calculations, compared to using NNLO PDFs, are significant, in many cases larger than the PDF uncertainty, and generally larger than the differences between the two aN$^3$LO PDF sets entering the combination. The combined aN$^3$LO PDF sets, MSHT20xNNPDF40_an3lo and MSHT20xNNPDF40_an3lo_qed, are made publicly available in the LHAPDF format and can be readily used for LHC phenomenology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_05373 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Combination of aN$^3$LO PDFs and implications for Higgs production cross-sections at the LHC Cridge, Thomas Harland-Lang, Lucian A. McGowan, Jamie Thorne, Robert S. Ball, Richard D. Candido, Alessandro Carrazza, Stefano Cruz-Martinez, Juan Del Debbio, Luigi Forte, Stefano Hekhorn, Felix Magni, Giacomo Nocera, Emanuele R. Rabemananjara, Tanjona R. Rojo, Juan Stegeman, Roy Ubiali, Maria High Energy Physics - Phenomenology High Energy Physics - Experiment We discuss how the two existing approximate N$^3$LO (aN$^3$LO) sets of parton distributions (PDFs) from the MSHT20 and NNPDF4.0 series can be combined for LHC phenomenology, both in the pure QCD case and for the QCD$\otimes$QED sets that include the photon PDF. Using the resulting combinations, we present predictions for the total inclusive cross-section for Higgs production in gluon fusion, vector boson fusion, and associated production at the LHC Run-3. For the gluon fusion and vector boson fusion channels, the corrections that arise when using correctly matched aN$^3$LO PDFs with N$^3$LO cross section calculations, compared to using NNLO PDFs, are significant, in many cases larger than the PDF uncertainty, and generally larger than the differences between the two aN$^3$LO PDF sets entering the combination. The combined aN$^3$LO PDF sets, MSHT20xNNPDF40_an3lo and MSHT20xNNPDF40_an3lo_qed, are made publicly available in the LHAPDF format and can be readily used for LHC phenomenology. |
| title | Combination of aN$^3$LO PDFs and implications for Higgs production cross-sections at the LHC |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2411.05373 |