tt¯ $tar t$ pair production cross section measurement at the LHC

Measurement of tt¯ $tar t$ pair production cross sections with an integrated luminosity of around 1 fb−1 at √s = 7 TeV obtained with the ATLAS and CMS detectors are reported. The inclusive cross sections in dilepton (ee, eμ, μμ and μτ), lepton+jets (e, μ) and all hadronic decay modes are measured....

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Bibliographic Details
Main Author: Kim Tae Jeong
Format: Article
Language:English
Published: EDP Sciences 2012-06-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20122805002
Description
Summary:Measurement of tt¯ $tar t$ pair production cross sections with an integrated luminosity of around 1 fb−1 at √s = 7 TeV obtained with the ATLAS and CMS detectors are reported. The inclusive cross sections in dilepton (ee, eμ, μμ and μτ), lepton+jets (e, μ) and all hadronic decay modes are measured. In addition to inclusive cross section measurement, the study of jet multiplicity with additional jets are also presented, which is important to constrain the initial state radiation. Measurement of the charge asymmetry at the LHC is also presented. All measurements are compatible with Standard Model predictions.
ISSN:2100-014X