Measurement of top quark pair differential cross-sections in the dilepton channel in $pp$ collisions at $\sqrt{s}$ = 7 and 8 TeV with ATLAS - INSPIRE

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Measurement of top quark pair differential cross-sections in the dilepton channel in $pp$ collisions at $\sqrt{s}$ = 7 and 8 TeV with ATLAS

ATLAS

Collaboration

Jul 25, 2016

33 pages

Published in:

Phys.Rev.D 94 (2016) 9, 092003,
Phys.Rev.D 101 (2020) 11, 119901 (addendum)

Published: Nov 11, 2016

e-Print:

1607.07281 [hep-ex]

DOI:

10.1103/PhysRevD.94.092003,
10.1103/PhysRevD.101.119901 (addendum)

Report number:

CERN-EP-2016-144

Experiments:

CERN-LHC-ATLAS

View in:

reference search106 citations

Citations per year

Abstract: (APS)

Measurements of normalized differential cross sections of top quark pair (tt¯) production are presented as a function of the mass, the transverse momentum and the rapidity of the tt¯ system in proton-proton collisions at center-of-mass energies of s=7 and 8 TeV. The data set corresponds to an integrated luminosity of 4.6 fb-1 at 7 TeV and 20.2 fb-1 at 8 TeV, recorded with the ATLAS detector at the Large Hadron Collider. Events with top quark pair signatures are selected in the dilepton final state, requiring exactly two charged leptons and at least two jets with at least one of the jets identified as likely to contain a b hadron. The measured distributions are corrected for detector effects and selection efficiency to cross sections at the parton level. The differential cross sections are compared with different Monte Carlo generators and theoretical calculations of tt¯ production. The results are consistent with the majority of predictions in a wide kinematic range.

Note:

34 pages plus author list (51 pages total), 11 figures, 10 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-07/

p p: scattering
p p: colliding beams
top: pair production
dilepton: final state
differential cross section
ATLAS
jet: bottom
transverse momentum dependence
mass dependence
CERN LHC Coll

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