Measurement of transverse energy-energy correlations in multi-jet events in $pp$ collisions at $\sqrt{s}=7$ TeV using the ATLAS detector and determination of the strong coupling constant ${\alpha }_{\mathrm{s}}(m_Z)$

Abstract

High transverse momentum jets produced in pp collisions at a centre of mass energy of 7 TeV are used to measure the transverse energy-energy correlation function and its associated azimuthal asymmetry. The data were recorded with the ATLAS detector at the LHC in the year 2011 and correspond to an integrated luminosity of 158 ${\mathrm{pb}}^{-1}$. The selection criteria demand the average transverse momentum of the two leading jets in an event to be larger than 250 GeV. The data at detector level are well described by Monte Carlo event generators. They are unfolded to the particle level and compared with theoretical calculations at next-to-leading-order accuracy. The agreement between data and theory is good and provides a precision test of perturbative Quantum Chromodynamics at large momentum transfers. From this comparison, the strong coupling constant given at the $Z$ boson mass is determined to be $α_{\mathrm{s}}(m_Z) = 0.1173 \pm 0.0010 \mbox{ (exp.) }^{+0.0065}_{-0.0026} \mbox{ (theo.)}$.

19 pages plus author list (35 pages total), 4 figures, 4 tables, submitted to Phys. Lett. B, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-03/

References in corpus (17)

• Parton distributions for the LHC
• Big-Bang Nucleosynthesis
• New parton distributions for collider physics
• Herwig++ Physics and Manual
• Performance of the ATLAS Trigger System in 2015
• Parton Distributions for LO Generators
• Jet energy measurement and its systematic uncertainty in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Hard Interactions of Quarks and Gluons: a Primer for LHC Physics
• Next-to-next-to-leading soft-gluon corrections for the top quark cross section and transverse momentum distribution
• Colour reconnections in Herwig++
• Measurement of the inclusive 3-jet production differential cross section in proton-proton collisions at 7 TeV and determination of the strong coupling constant in the TeV range
• Measurement of dijet cross sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector
• Measurement of the inclusive jet cross-section in proton-proton collisions at $\sqrt{s}=7$ TeV using 4.5 fb${}^{-1}$ of data with the ATLAS detector
• Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton-proton collisions at sqrt(s) = 7 TeV
• Evaluation of the Strong Coupling Constant alpha_s Using the ATLAS Inclusive Jet Cross-Section Data
• Measurement of three-jet production cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector
• Measurement of Event Shapes in Proton-Antiproton Collisions at Center-of-Mass Energy 1.96 TeV

Cited by in corpus (18)

• All master integrals for three-jet production at NNLO
• A first next-to-next-to-leading order study of three-jet production at the LHC
• The Transverse Energy-Energy Correlator in the Back-to-Back Limit
• Determination of the strong coupling constant ${\alpha }_s$ from transverse energy-energy correlations in multijet events at $\sqrt{s}=8$ TeV using the ATLAS detector
• Energy-energy correlators in Deep Inelastic Scattering
• Measurement of the triple-differential dijet cross section in proton-proton collisions at sqrt(s) = 8 TeV and constraints on parton distribution functions
• Why ${\alpha }_s$ Cannot be Determined from Hadronic Processes without Simultaneously Determining the Parton Distributions
• Limits on new coloured fermions using precision jet data from the Large Hadron Collider
• Transverse Energy-Energy Correlators in the Color-Glass Condensate at the Electron-Ion Collider
• Transverse Energy-Energy Correlations of jets in the electron-proton Deep Inelastic Scattering at HERA
• Electroweak, QCD and flavour physics studies with ATLAS data from Run 2 of the LHC
• Non-Extensive Behaviour of the QCD Strong Coupling Constant
• Strong coupling constant extraction from high-multiplicity Z+jets observables
• Accessing nucleon transversity with one-point energy correlators
• Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Transverse Energy-Energy Correlator for Vector Boson-Tagged Hadron Production in $pp$ and $pA$ collisions
• Limits on new strongly interacting matter from measurements of Transverse Energy-Energy Correlations at $\sqrt{s}=13$ TeV at the LHC
• Jet substructure of light and heavy flavor jets at RHIC