Springer : Running of the top quark mass at NNLO in QCD

Defranchis, Matteo M.; Kieseler, Jan; Mazzitelli, Javier; Lipka, Katerina

doi:10.1007/JHEP04(2024)125

Article
Report number	arXiv:2208.11399 ; MPP-2022-110
Title	Running of the top quark mass at NNLO in QCD
Author(s)	Defranchis, Matteo M. (CERN) ; Kieseler, Jan (CERN) ; Lipka, Katerina (Wuppertal U. ; DESY) ; Mazzitelli, Javier (Munich, Max Planck Inst.)
Publication	2024-04-23
Imprint	2022-08-24
Number of pages	10
In:	JHEP 2404 (2024) 125
DOI	10.1007/JHEP04(2024)125
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Abstract	The running of the top quark mass ($m_\mathrm{t}$) is probed at the next-to-next-to-leading order (NNLO) in quantum chromodynamics (QCD) for the first time. The result is obtained by comparing calculations in the modified minimal subtraction ($\mathrm{\bar{MS}}$) renormalisation scheme to a differential measurement of the top quark-antiquark ($\mathrm{t\bar{t}}$) production cross section at $\sqrt{s} = 13 \mathrm{TeV}$. The scale dependence of $m_\mathrm{t}$ is extracted as a function of the invariant mass of the $\mathrm{t\bar{t}}$ system, up to an energy scale of about $0.5 \mathrm{TeV}$. The observed running is found to be in good agreement with the three-loop solution of the QCD renormalisation group equations.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2024-2025 The Authors (License: CC-BY-4.0), sponsored by SCOAP³

$Calculated \ttbar production cross section ($\sigma_\ttbar^k$) in bin $k$ of \mtt as a function of \mtmukk (points) compared to the re-scaled value of the measured cross section of Ref.~\cite{CMS:2019jul} (horizontal lines). The vertical error bars represent the numerical uncertainty in the theoretical predictions, while the horizontal error bands correspond to the re-scaled uncertainty in the measured cross sections. The dependence of the calculated cross section on the value of \mtmukk is parameterised assuming a quadratic dependence (line).$ $Calculated \ttbar production cross section ($\sigma_\ttbar^k$) in bin $k$ of \mtt as a function of \mtmukk (points) compared to the re-scaled value of the measured cross section of Ref.~\cite{CMS:2019jul} (horizontal lines). The vertical error bars represent the numerical uncertainty in the theoretical predictions, while the horizontal error bands correspond to the re-scaled uncertainty in the measured cross sections. The dependence of the calculated cross section on the value of \mtmukk is parameterised assuming a quadratic dependence (line).$ $Calculated \ttbar production cross section ($\sigma_\ttbar^k$) in bin $k$ of \mtt as a function of \mtmukk (points) compared to the re-scaled value of the measured cross section of Ref.~\cite{CMS:2019jul} (horizontal lines). The vertical error bars represent the numerical uncertainty in the theoretical predictions, while the horizontal error bands correspond to the re-scaled uncertainty in the measured cross sections. The dependence of the calculated cross section on the value of \mtmukk is parameterised assuming a quadratic dependence (line).$ Show more plots

Corresponding record in: Inspire

Back to search

Journalen skapades 2023-04-04, och modifierades senast 2024-05-03

Similar records

Fulltext:
2208.11399 -

PDF
document -

PDF

Add to personal basket
Exportera BibTeX, MARC, MARCXML, DC, EndNote, NLM, RefWorks

CERN Document Server

Access articles, reports and multimedia content in HEP

Main menu

CERN Accelerating science