Determination of the top-quark pole mass using + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions
Collaboration
23 pages
Published in:
- JHEP 10 (2015) 121
- Published: Oct 19, 2015
e-Print:
- 1507.01769 [hep-ex]
Report number:
- CERN-PH-EP-2015-100
Experiments:
Citations per year
Abstract: (Springer)
The normalized differential cross section for top-quark pair production in association with at least one jet is studied as a function of the inverse of the invariant mass of the + 1-jet system. This distribution can be used for a precise determination of the top-quark mass since gluon radiation depends on the mass of the quarks. The experimental analysis is based on proton-proton collision data collected by the ATLAS detector at the LHC with a centre-of-mass energy of 7 TeV corresponding to an integrated luminosity of 4.6 fb. The selected events were identified using the lepton+jets top-quark-pair decay channel, where lepton refers to either an electron or a muon. The observed distribution is compared to a theoretical prediction at next-to-leading-order accuracy in quantum chromodynamics using the pole-mass scheme. With this method, the measured value of the top-quark pole mass, m , is: Note:
- 24 pages plus author list (40 pages total), 5 figures, 4 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2014-06/
- Hadron-Hadron Scattering
- Top physics
- p p: scattering
- p p: colliding beams
- jet: associated production
- mass: pole
- top: pair production
- top: mass: measured
- quark: mass
- gluon: radiation
References(71)
Figures(11)
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