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Determination of the top-quark pole mass using (Formula presented.) + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions

The ATLAS collaboration, Null
•
Aad, G.
•
Abbott, B.
altro
Zwalinski, L.
2015
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
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 t (t) over bar + 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 7TeV corresponding to an integrated luminosity of 4.6 fb(-1). 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(t)(pole), is: m(t)(pole) t = 173.7 +/- 1.5 (stat.) +/- 1.4 (syst.)(-0.5)(+1.0) (theory) GeV. This result represents the most precise measurement of the top-quark pole mass to date.
DOI
10.1007/JHEP10(2015)121
WOS
WOS:000363476900001
Archivio
http://hdl.handle.net/11390/1110199
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84945275693
http://link.springer.com/article/10.1007%2FJHEP10%282015%29121
Diritti
metadata only access
Soggetti
  • Hadron-Hadron Scatter...

  • Top physic

  • Nuclear and High Ener...

Scopus© citazioni
27
Data di acquisizione
Jun 2, 2022
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Web of Science© citazioni
34
Data di acquisizione
Mar 27, 2024
Visualizzazioni
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Data di acquisizione
Apr 19, 2024
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