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000632668 088__ $$2arXiv$$aarXiv:2407.00545
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000632668 1001_ $$aAlekhin, S.$$b0
000632668 245__ $$aNNLO PDFs driven by top-quark data
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000632668 500__ $$aEur. 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
000632668 520__ $$aWe study the impact of state-of-the-art top-quark data collected at the large hadron collider on parton distribution functions (PDFs). Following the ABMP methodology, the fit extracts simultaneously proton PDFs, the strong coupling $\alpha _s(M_Z)$ and heavy-quark masses at next-to-next-to-leading order (NNLO) accuracy in QCD. It includes recent high-statistics data on absolute total inclusive cross sections for $t\bar{t}+X$, the sum of $(t + X)$ and $(\bar{t} + X)$ hadroproduction, and normalized inclusive data double-differential in the invariant mass and rapidity of the $t\bar{t}$ pair at $\sqrt{S}=13$ TeV. The gluon PDF at large x and the top-quark mass value derived from these data are well compatible with the previous ABMP16 results, but with significantly smaller uncertainties, reduced by up to a factor of two. At NNLO in QCD we obtain for the strong coupling the value $\alpha _s^{(n_f=5)}(M_Z)= 0.1150 \pm 0.0009$ and for the top-quark mass in the ${\overline{\text{ MS }}}$-scheme $m_t(m_t) = 160.6 \pm 0.6$ GeV, corresponding to $m_t^\textrm{pole} = 170.2 \pm 0.7$ GeV in the on-shell scheme. The new fit, dubbed ABMPtt, is publicly released in grids in LHAPDF format.
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000632668 7001_ $$0P:(DE-H253)PIP1023234$$aGarzelli, M. V.$$b1$$eCorresponding author
000632668 7001_ $$0P:(DE-H253)PIP1003775$$aMoch, S.-O.$$b2
000632668 7001_ $$0P:(DE-H253)PIP1007500$$aZenaiev, O.$$b3
000632668 773__ $$0PERI:(DE-600)1459069-4$$a10.1140/epjc/s10052-025-13832-8$$gVol. 85, no. 2, p. 162$$n2$$p162$$tThe European physical journal / C$$v85$$x1434-6044$$y2025
000632668 7870_ $$0PUBDB-2024-04864$$aAlekhin, Sergey et.al.$$d2024$$iIsParent$$rarXiv:2407.00545 ; DESY-24-092$$tNNLO PDFs driven by top-quark data
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