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001     632668
005     20250723110039.0
024 7 _ |a 10.1140/epjc/s10052-025-13832-8
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024 7 _ |a 1434-6044
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024 7 _ |a arXiv:2407.00545
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088 _ _ |a arXiv:2407.00545
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088 _ _ |a DESY-24-092
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100 1 _ |a Alekhin, S.
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245 _ _ |a NNLO PDFs driven by top-quark data
260 _ _ |a Heidelberg
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500 _ _ |a Eur. Phys. J. C 85 (2025) 162, 1 - 25. 33 pages, 22 figures, 4 tables, interpolation tables for top-antitop production available at https://ploughshare.web.cern.ch v2: minor revision accounting for the comments of the Referee, to be published in EPJC
520 _ _ |a We study the impact of state-of-the-art top-quark data collected at the large hadron collider on parton distribution functions (PDFs). Following the ABMP methodology, the fit extracts simultaneously proton PDFs, the strong coupling $\alpha _s(M_Z)$ and heavy-quark masses at next-to-next-to-leading order (NNLO) accuracy in QCD. It includes recent high-statistics data on absolute total inclusive cross sections for $t\bar{t}+X$, the sum of $(t + X)$ and $(\bar{t} + X)$ hadroproduction, and normalized inclusive data double-differential in the invariant mass and rapidity of the $t\bar{t}$ pair at $\sqrt{S}=13$ TeV. The gluon PDF at large x and the top-quark mass value derived from these data are well compatible with the previous ABMP16 results, but with significantly smaller uncertainties, reduced by up to a factor of two. At NNLO in QCD we obtain for the strong coupling the value $\alpha _s^{(n_f=5)}(M_Z)= 0.1150 \pm 0.0009$ and for the top-quark mass in the ${\overline{\text{ MS }}}$-scheme $m_t(m_t) = 160.6 \pm 0.6$ GeV, corresponding to $m_t^\textrm{pole} = 170.2 \pm 0.7$ GeV in the on-shell scheme. The new fit, dubbed ABMPtt, is publicly released in grids in LHAPDF format.
536 _ _ |a 611 - Fundamental Particles and Forces (POF4-611)
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536 _ _ |a DFG project G:(GEPRIS)409651613 - FOR 2926: Next Generation Perturbative QCD for Hadron Structure: Preparing for the Electron-Ion Collider (409651613)
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536 _ _ |a 05H21GUCCA - Verbundprojekt 05H2021 (ErUM-FSP T03) - Run 3 von CMS am LHC: Präzisionsbestimmung von Partondichtefunktionen und Top-Quark-Masse (BMBF-05H21GUCCA)
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700 1 _ |a Garzelli, M. V.
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700 1 _ |a Moch, S.-O.
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700 1 _ |a Zenaiev, O.
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773 _ _ |a 10.1140/epjc/s10052-025-13832-8
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787 0 _ |a Alekhin, Sergey et.al.
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