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1.
Combination of aN$^3$LO PDFs and implications for Higgs production cross-sections at the LHC / MSHT Collaboration
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. [...]
arXiv:2411.05373 ; DESY-24-134 ; TIF-UNIMI-2024-17 ; Edinburgh 2024/9 ; CERN-TH-2024-167.
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2.
Impact of Inclusive Electron Ion Collider Data on Collinear Parton Distributions / Armesto, Néstor (Santiago de Compostela U., IGFAE) ; Cridge, Thomas (DESY) ; Giuli, Francesco (CERN) ; Harland-Lang, Lucian (University Coll. London) ; Newman, Paul (Birmingham U.) ; Schmookler, Barak (UC, Riverside) ; Thorne, Robert (University Coll. London) ; Wichmann, Katarzyna (DESY)
A study is presented of the impact of simulated inclusive Electron Ion Collider Deep Inelastic Scattering data on the determination of the proton and nuclear parton distribution functions (PDFs) at next-to-next-to-leading and next-to-leading order in QCD, respectively. The influence on the proton PDFs is evaluated relative to the HERAPDF2.0 set, which uses inclusive HERA data only, and also relative to the global fitting approach of the MSHT20 PDFs. [...]
arXiv:2309.11269; DESY-23-136.- 2024-03-01 - 12 p. - Published in : Phys. Rev. D 109 (2024) 5 Fulltext: PDF;
3.
Quantifying the interplay of experimental constraints in analyses of parton distributions / Jing, Xiaoxian (Southern Methodist U.) ; Cooper-Sarkar, Amanda (Oxford U.) ; Courtoy, Aurore (Mexico U.) ; Cridge, Thomas (DESY) ; Giuli, Francesco (CERN) ; Harland-Lang, Lucian (University Coll. London) ; Hobbs, T.J. (Argonne) ; Huston, Joey (Michigan State U.) ; Nadolsky, Pavel (Southern Methodist U.) ; Thorne, Robert S. (University Coll. London) et al.
Parton distribution functions (PDFs) play a central role in calculations for the Large Hadron Collider (LHC). To gain a deeper understanding of the emergence and interplay of constraints on the PDFs in the global QCD analyses, it is important to examine the relative significance and mutual compatibility of the experimental data sets included in the PDF fits. [...]
arXiv:2306.03918; ANL-182798; DESY-23-068; FERMILAB-PUB-23-276-T; MSUHEP-23-016; PITT-PACC-2315; SMU-HEP-23-02.- 2023-08-01 - 57 p. - Published in : Phys. Rev. D 108 (2023) 034029 Fulltext: 2306.03918 - PDF; FERMILAB-PUB-23-276-T - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
4.
The PDF4LHC21 combination of global PDF fits for the LHC Run III / PDF4LHC Working Group Collaboration
A precise knowledge of the quark and gluon structure of the proton, encoded by the parton distribution functions (PDFs), is of paramount importance for the interpretation of high-energy processes at present and future lepton-hadron and hadron-hadron colliders. Motivated by recent progress in the PDF determinations carried out by the CT, MSHT, and NNPDF groups, we present an updated combination of global PDF fits: PDF4LHC21. [...]
arXiv:2203.05506; Edinburgh 2021/31; FERMILAB-PUB-22-121-QIS-SCD-T; MSUHEP-22-010, Nikhef 2021-033; SMU-HEP-22-01.- 2022-07-05 - 94 p. - Published in : J. Phys. G 49 (2022) 080501 Fulltext: jt - PDF; 2203.05506 - PDF; Publication - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server

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