Measurement of the t t ¯ tt production cross section using events with one lepton and at least one jet in pp collisions at s = 13 √(s)=13 TeV

2017/01/31 by A. M. Sirunyan, CMS Collaboration, A. Tumasyan +98 · 2 citations
Physics and Astronomy · #Electron #Hadronization #High-Energy Particle Collisions Research #Invariant mass #Lepton #Muon #Nuclear physics #Pair production #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quark #Top quark #hep-ex

paper · pdf · doi:10.1007/jhep09(2017)051

published as JHEP 09 (2017) 051 · Replaced with the published version. Added the journal reference and DOI. Includes updated results using the latest integrated luminosity measurement. All the figures and tables, including additional supplemental figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-16-006 (CMS Public Pages)

openalex publication_date 2017/09/01 · arxiv created 2017/09/15 · arxiv updated 2017/09/18 · openalex created_date 2018/01/26 · openalex updated_date 2026/08/05

Abstract

A measurement of the t t production cross section at √(s) = 13 TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 fb⁻¹, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and categorized according to the accompanying jet multiplicity. From a likelihood fit to the invariant mass distribution of the isolated lepton and a jet identified as coming from the hadronization of a bottom quark, the cross section is measured to be σ_{t t}=888±2,(stat)⁺²⁶₋₂₈(syst)±20(lumi) pb, in agreement with the standard model prediction. Using the expected dependence of the cross section on the pole mass of the top quark (m_t), the value of m_t is found to be 170.6 ± 2.7 GeV.

Citations

• Measurement of the tt t t ¯ production cross section in the all-jets final state in pp collisions at √(s)=8 s = 8 \text TeV TeV
• The anti-ktjet clustering algorithm
• The catchment area of jets
• Measurement of the differential cross section for top quark pair production in pp collisions at √(s) = 8 \text TeV s = 8 TeV
• Geant4 developments and applications
• Parton distributions for the LHC run II
• A positive-weight next-to-leading-order Monte Carlo for heavy flavour hadroproduction
• Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s= 8 TeV
• tW−mode of single top quark production
• Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √(s)=7 TeV

Cited by

• Measurement of the inclusive tt cross section in pp collisions at √(s)=5.02 TeV using final states with at least one charged lepton
• Measurement of the tt¯ production cross-section in the lepton+jets channel at s=13 TeV with the ATLAS experiment