Measurement of the jet mass distribution and top quark mass in hadronic decays of boosted top quarks in pp collisions at $\sqrt{s}=$ 13 TeV

Abstract

A measurement is reported of the jet mass distribution in hadronic decays of boosted top quarks produced in pp collisions at $\sqrt{s}=$ 13 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 35.9 fb${}^{-1}$. The measurement is performed in the lepton+jets channel of $\mathrm{t}\bar{\mathrm{t}}$ events, where the lepton is an electron or muon. The products of the hadronic top quark decay t $\to$ bW $\to$ bq${\bar{\mathrm{q}}}^{\prime }$ are reconstructed as a single jet with transverse momentum larger than 400 GeV. The $\mathrm{t}\bar{\mathrm{t}}$ cross section as a function of the jet mass is unfolded at the particle level and used to extract a value of the top quark mass of 172.6 $\pm$ 2.5 GeV. A novel jet reconstruction technique is used for the first time at the LHC, which improves the precision by a factor of three relative to an earlier measurement. This highlights the potential of measurements using boosted top quarks, where the new technique will enable future precision measurements.

arXiv commentReplaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures and tables, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-19-005 (CMS Public Pages)

References in corpus (79)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• An Introduction to PYTHIA 8.2
• FastJet user manual
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Parton distributions for the LHC Run II
• Matching NLO QCD computations and parton shower simulations
• An effective field theory for collinear and soft gluons: heavy to light decays
• Soft-Collinear Factorization in Effective Field Theory
• A Positive-Weight Next-to-Leading-Order Monte Carlo for Heavy Flavour Hadroproduction
• Better Jet Clustering Algorithms
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Particle-flow reconstruction and global event description with the CMS detector
• Tuning PYTHIA 8.1: the Monash 2013 Tune
• Summing Sudakov logarithms in B -> X_s + gamma in effective field theory
• The CMS trigger system
• Invariant Operators in Collinear Effective Theory
• Single-top Wt-channel production matched with parton showers using the POWHEG method
• Merging meets matching in MC@NLO
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• Event generator tunes obtained from underlying event and multiparton scattering measurements
• Jet Trimming
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV
• NLO single-top production matched with shower in POWHEG: s- and t-channel contributions
• Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements
• ZZ production at hadron colliders in NNLO QCD
• Combining QCD and electroweak corrections to dilepton production in FEWZ
• Update of the global electroweak fit and constraints on two-Higgs-doublet models
• String Formation Beyond Leading Colour
• Jet Substructure at the Large Hadron Collider: A Review of Recent Advances in Theory and Machine Learning
• $W^{+}{W}^{-}$ production at hadron colliders in NNLO QCD
• Jet Substructure at the Large Hadron Collider: Experimental Review
• Performance of missing transverse momentum reconstruction in proton-proton collisions at $\sqrt{s}=$ 13 TeV using the CMS detector
• Jets from Massive Unstable Particles: Top-Mass Determination
• Measurement of the inelastic proton-proton cross section at $\sqrt{s}=$ 13 TeV
• Top Jets in the Peak Region: Factorization Analysis with NLL Resummation
• Measurement of the top quark mass using proton-proton data at sqrt(s) = 7 and 8 TeV
• TUnfold: an algorithm for correcting migration effects in high energy physics
• Measurement of the $t\bar{t}$ production cross-section using $e\mu$ events with $b$-tagged jets in $pp$ collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS detector
• Effects of color reconnection on $t\bar{t}$ final states at the LHC
• Search for resonant t t-bar production in proton-proton collisions at sqrt(s) = 8 TeV
• Measurement of the $\mathrm{t}\overline{\mathrm{t}}$ production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at $\sqrt{s}=$ 13 TeV
• Measurement of inclusive W and Z boson production cross sections in pp collisions at sqrt(s) = 8 TeV
• Measurement of the top quark mass in the $t\bar{t}\to$ lepton+jets channel from $\sqrt{s}=8$ TeV ATLAS data and combination with previous results
• Measurement of $\mathrm{t}\bar{\mathrm{t}}$ normalised multi-differential cross sections in pp collisions at $\sqrt{s}=13$ TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions
• Measurement of the t-tbar production cross section in the e-mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV
• Measurement of the top quark mass in the $t\bar{t}\to$ dilepton channel from $\sqrt{s}=8$ TeV ATLAS data
• Top Quark Mass Calibration for Monte Carlo Event Generators
• Measurement of differential cross sections for the production of top quark pairs and of additional jets in lepton+jets events from pp collisions at $\sqrt{s}=$ 13 TeV
• Measurement of the top quark mass in the all-jets final state at $\sqrt{s}=$ 13 TeV and combination with the lepton+jets channel
• Cross section measurement of t-channel single top quark production in pp collisions at sqrt(s) = 13 TeV
• Measurement of the differential cross-section of highly boosted top quarks as a function of their transverse momentum in $\sqrt{s}$ = 8 TeV proton-proton collisions using the ATLAS detector
• Measurements of $t\bar{t}$ differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector
• Two-loop Jet-Function and Jet-Mass for Top Quarks
• Extracting a Short Distance Top Mass with Light Grooming
• Top Quark Pair Production beyond NNLO
• XCone: N-jettiness as an Exclusive Cone Jet Algorithm
• NNNLO soft-gluon corrections for the top-antitop pair production cross section
• Data Unfolding Methods in High Energy Physics
• Measurement of the top quark mass with lepton+jets final states using pp collisions at $\sqrt{s}=$ 13 TeV
• Search for resonant $\mathrm{t}\overline{\mathrm{t}}$ production in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Measurement of the WZ production cross section in pp collisions at sqrt(s) = 13 TeV
• Top-quark mass measurement in the all-hadronic $t\bar{t}$ decay channel at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Top-quark pair production at hadron colliders: differential cross section and phenomenological applications with DiffTop
• On the Cutoff Dependence of the Quark Mass Parameter in Angular Ordered Parton Showers
• Measurement of the t t-bar production cross section using events in the e mu final state in pp collisions at sqrt(s) = 13 TeV
• Measurement of the integrated and differential t-tbar production cross sections for high-pt top quarks in pp collisions at sqrt(s) = 8 TeV
• Measurement of lepton differential distributions and the top quark mass in $t\bar{t}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Measurement of the jet mass in highly boosted t t-bar events from pp collisions at sqrt(s) = 8 TeV
• A theoretical study of top-mass measurements at the LHC using NLO+PS generators of increasing accuracy
• Measurement of the top quark mass in the dileptonic t t-bar decay channel using the mass observables M[bl], M[T2], and M[blnu] in pp collisions at sqrt(s) = 8 TeV
• Resolving Boosted Jets with XCone
• Two-Loop Massive Quark Jet Functions in SCET
• Hard Matching for Boosted Tops at Two Loops
• Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton+jets final state in pp collisions at $\sqrt{s}=$ 13 TeV

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• The ALICE experiment: a journey through QCD
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• Testing new physics models with global comparisons to collider measurements: the Contur toolkit
• Measurements of the groomed and ungroomed jet angularities in pp collisions at $\sqrt{s}=5.02$ TeV
• Measurement of the differential $\mathrm{t}\bar{\mathrm{t}}$ production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks
• Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at $\sqrt{s}$ = 13 TeV
• Dispelling the $\sqrt{L}$ myth for the High-Luminosity LHC
• Combination of measurements of the top quark mass from data collected by the ATLAS and CMS experiments at $\sqrt{s}$ = 7 and 8 TeV
• The Linear Template Fit
• Reconstruction of decays to merged photons using end-to-end deep learning with domain continuation in the CMS detector
• Spectral Clustering for Jet Physics
• Precise determination of the top-quark on-shell mass $M_t$ via its scale-invariant perturbative relation to the top-quark $\overline{\mathrm{MS}}$ mass ${\overline{m}}_t({\overline{m}}_t)$
• Measurement of jet substructure in boosted $t\bar{t}$ events with the ATLAS detector using 140 fb${}^{-1}$ of 13 TeV $pp$ collisions
• Medium-induced modification of groomed and ungroomed jet mass and angularities in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• How to Unfold Top Decays
• Prospects for Higgs boson and new scalar resonant production searches in ttbb final state at the LHC
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