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Measurements of normalized differential cross sections fortt ̄production inppcollisions at(s)=7 TeVusing the ATLAS detector

Aad, G.
•
Abajyan, T.
•
Abbott, B.
altro
GIORDANI, Mario
2014
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
Measurements of normalized differential cross sections for top-quark pair production are presented as a function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the t ̄t system, in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data set corresponds to an integrated luminosity of 4.6 fb-1, recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Events are selected in the lepton + jets channel, requiring exactly one lepton and at least four jets with at least one of the jets tagged as originating from a b-quark. The measured spectra are corrected for detector efficiency and resolution effects and are compared to several Monte Carlo simulations and theory calculations. The results are in fair agreement with the predictions in a wide kinematic range. Nevertheless, data distributions are softer than predicted for higher values of the mass of the t ̄t system and of the top-quark transverse momentum. The measurements can also discriminate among different sets of parton distribution functions.
DOI
10.1103/PhysRevD.90.072004
WOS
WOS:000343772600001
Archivio
http://hdl.handle.net/11390/1109897
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84940558080
Diritti
metadata only access
Scopus© citazioni
89
Data di acquisizione
Jun 14, 2022
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Web of Science© citazioni
19
Data di acquisizione
Mar 27, 2024
Visualizzazioni
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Data di acquisizione
Apr 19, 2024
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