Top-quark pole mass extraction at NNLO accuracy, from total, single- and double-differential cross sections for $t\bar{t}+X$ production at the LHC

Abstract

We extract the top-quark mass value in the on-shell renormalization scheme from the comparison of theoretical predictions for $pp\to t\bar{t}+X$ at next-to-next-to-leading order (NNLO) QCD accuracy with experimental data collected by the ATLAS and CMS collaborations for absolute total, normalized single-differential and double-differential cross-sections during Run 1, Run 2 and the ongoing Run 3 at the Large Hadron Collider (LHC). For the theory computations of heavy-quark pair-production we use the MATRIX framework, interfaced to PineAPPL for the generation of grids of theory predictions, which can be efficiently used a-posteriori during the fit, performed within xFitter. We take several state-of-the-art parton distribution functions (PDFs) as input for the fit and evaluate their associated uncertainties, as well as the uncertainties arising from renormalization and factorization scale variation. Fit uncertainties related to the datasets are also part of the extracted uncertainty of the top-quark mass and turn out to be of similar size as the combined scale and PDF uncertainty. Fit results from different PDF sets agree among each other within 1$\sigma$ uncertainty, whereas some datasets related to $t\bar{t}$ decay in different channels (dileptonic vs. semileptonic) point towards top-quark mass values in slight tension among each other, although still compatible within $2.5\sigma$ accuracy. Our results are compatible with the PDG 2022 top-quark pole-mass value. Our work opens the road towards more complex simultaneous NNLO fits of PDFs, the strong coupling ${\alpha }_s(M_Z)$ and the top-quark mass, using the currently most precise experimental data on $t\bar{t}+X$ total and multi-differential cross-sections from the LHC.

References in corpus (29)

• LHAPDF6: parton density access in the LHC precision era
• An NNLO subtraction formalism in hadron collisions and its application to Higgs boson production at the LHC
• Vector boson production at hadron colliders: a fully exclusive QCD calculation at NNLO
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• A novel subtraction scheme for double-real radiation at NNLO
• Theoretical status and prospects for top-quark pair production at hadron colliders
• Measuring the running top-quark mass
• Four-dimensional formulation of the sector-improved residue subtraction scheme
• Tops from Light Quarks: Full Mass Dependence at Two-Loops in QCD
• Top-quark pair hadroproduction at next-to-next-to-leading order in QCD
• Electroweak effects in top-quark pair production at Hadron Colliders
• Transverse-momentum resummation for heavy-quark hadroproduction
• Transverse-momentum resummation for top-quark pairs at hadron colliders
• What is the Top Quark Mass?
• Higgs boson production in association with a top-antitop quark pair in next-to-next-to leading order QCD
• On the Light Massive Flavor Dependence of the Large Order Asymptotic Behavior and the Ambiguity of the Pole Mass
• Precise predictions for the associated production of a $W$ boson with a top-antitop quark pair at the LHC
• Top-quark pair production at hadron colliders: differential cross section and phenomenological applications with DiffTop
• Top-quark pair hadroproduction at NNLO: differential predictions with the MSbar mass
• Associated production of a $W$ boson and massive bottom quarks at next-to-next-to-leading order in QCD
• The top quark legacy of the LHC Run II for PDF and SMEFT analyses
• NNLO QCD subtraction for top-antitop production in the $q\bar{q}$ channel
• Linear power corrections for two-body kinematics in the $q_T$ subtraction formalism
• Soft-parton contributions to heavy-quark production at low transverse momentum
• Projected transverse momentum resummation in top-antitop pair production at LHC
• Light fermionic NNLO QCD corrections to top-antitop production in the quark-antiquark channel
• Constraining the top-quark mass within the global MSHT PDF fit
• Linear power corrections to top quark pair production in hadron collisions
• Running of the top quark mass at NNLO in QCD

Cited by in corpus (5)

• The Landscape of Unfolding with Machine Learning
• NNLO PDFs driven by top-quark data
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• The $q_{\mathrm{T}}$ and $\Delta {\varphi }_{t\bar{t}}$ spectra in top-antitop hadroproduction at NNLL+NNLO: the interplay of soft-collinear resummation and Coulomb singularities
• NNLO fits of top-quark mass using total, single-differential and double-differential $t\bar{t}+X$ cross-section data