Addendum to ‘Measurement of the tt¯ production cross-section using eμ events with b -tagged jets in pp collisions at s = 7 and 8 TeV with the ATLAS detector'

ATLAS Collaboration

doi:10.1140/epjc/s10052-016-4501-2

Scientific article

English

Addendum to ‘Measurement of the tt¯ production cross-section using eμ events with b -tagged jets in pp collisions at s = 7 and 8 TeV with the ATLAS detector'

ContributorsATLAS Collaboration

Published inEuropean physical journal. C, Particles and fields, vol. 76, no. 11, 642

Collection

Open Access - SCOAP3

Publication date2016

Abstract

The ATLAS measurement of the inclusive top quark pair ( tt¯ ) cross-section σtt¯ in proton–proton collisions at s=8 TeV has been updated using the final 2012 luminosity calibration. The updated cross-section result is: σtt¯=242.9±1.7±5.5±5.1±4.2pb, where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, knowledge of the integrated luminosity and of the LHC beam energy. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. The measurement of the ratio of tt¯ cross-sections at s=8 TeV and s=7 TeV , and the s=8 TeV fiducial measurement corresponding to the experimental acceptance of the leptons, have also been updated.

Affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

ATLAS Collaboration. Addendum to ‘Measurement of the tt¯ production cross-section using eμ events with b -tagged jets in pp collisions at s = 7 and 8 TeV with the ATLAS detector”. In: European physical journal. C, Particles and fields, 2016, vol. 76, n° 11, p. 642. doi: 10.1140/epjc/s10052-016-4501-2