arXiv : Top-quark pole mass extraction at NNLO accuracy

Alekhin, S.; Garzelli, M.V.; Zenaiev, O.; Mazzitelli, J.; Moch, S.-O.

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Preprint
Report number	CERN-TH-2024-225 ; arXiv:2412.20259
Title	Top-quark pole mass extraction at NNLO accuracy
Author(s)	Alekhin, S. (Hamburg U., Inst. Theor. Phys. II) ; Garzelli, M.V. (Hamburg U., Inst. Theor. Phys. II ; CERN) ; Mazzitelli, J. (PSI, Villigen) ; Moch, S.-O. (Hamburg U., Inst. Theor. Phys. II) ; Zenaiev, O. (Hamburg U., Inst. Theor. Phys. II)
Document contact	Contact: arXiv
Imprint	2024-12-28
Number of pages	6
Note	6 pages, 2 figures, invited contribution to the Proceedings of the 12th Large Hadron Collider Physics Conference (LHCP2024), Boston, USA, 3-7 June 2024
Presented at	12th Edition of the Large Hadron Collider Physics Conference, Boston, United States, 3 - 7 Jun 2024, pp.
Subject category	hep-ph ; Particle Physics - Phenomenology
Abstract	We describe our recent NNLO QCD extraction of the top-quark pole mass from fits to experimental data on total inclusive and normalized (multi)-differential cross sections for $t\bar{t} + X$ hadroproduction, using as input various modern PDF + $\alpha_s(M_Z)$ sets. We find top-quark mass values compatible among each other and with the PDG 2024 preferred value.
Other source	Inspire
Copyright/License	preprint: (License: CC BY-NC-ND 4.0)

$Comparison of predictions for the invariant mass (left panel) and the rapidity (right panel) distributions of top-quark pairs in $pp \rightarrow t\bar{t} + X$ at $\sqrt{S}$~=~13~TeV obtained by our version of \texttt{MATRIX} with $r_0$~=~0.15\% (orange) and with $r_0$~=~0.05\% (green), with the STRIPPER predictions of Ref.~\cite{Czakon:2016dgf} (blue), here labelled as CHM. The bands refer to numerical uncertainties in the various computations. $r_0$ is a cut-off on $q_T/M(t\bar{t})$, used in $q_T$ subtraction. The exact cross sections correspond to the limit $r_0 \rightarrow 0$ ($q_T \rightarrow 0$).$ $Comparison of predictions for the invariant mass (left panel) and the rapidity (right panel) distributions of top-quark pairs in $pp \rightarrow t\bar{t} + X$ at $\sqrt{S}$~=~13~TeV obtained by our version of \texttt{MATRIX} with $r_0$~=~0.15\% (orange) and with $r_0$~=~0.05\% (green), with the STRIPPER predictions of Ref.~\cite{Czakon:2016dgf} (blue), here labelled as CHM. The bands refer to numerical uncertainties in the various computations. $r_0$ is a cut-off on $q_T/M(t\bar{t})$, used in $q_T$ subtraction. The exact cross sections correspond to the limit $r_0 \rightarrow 0$ ($q_T \rightarrow 0$).$ $$m_t^{\rm{pole}}$ values extracted using datasets of normalized (multi-)differential cross sections obtained in Run I (left upper panel) and Run II (right upper panel), as well $m_t^{\rm{pole}}$ values from a global analysis of Run 1 + Run 2 differential and total inclusive cross sections (lower panel). The light-blue band in all panels corresponds to the PDG 2024 $m_t^{\rm{pole}}$ value. In the inset in the lowest panel, the best-fit $m_t^{\rm{pole}}$ values from the global fit, together with the data, PDF and scale uncertainties, are reported for each of the considered PDF~+~$\alpha_s(M_Z)$ sets adopted as input.$ Show more plots

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Record creato 2025-01-01, modificato l'ultima volta il 2025-01-07

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