Measurement of the cross section in tt + jets using a multivariate kinematics fit method with the ATLAS detector

Details Measurement of the cross section in tt + jets using a multivariate kinematics fit method with the ATLAS detector Measurement of the cross section in tt + jets using a multivariate kinematics fit method with the ATLAS detector

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.j9002a&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #J9.002

Physics

Scientific paper

A measurement of the production cross-section for tt events with an additional jet (tt + jet) is presented, using 5.0 fb-1 of data collected by the ATLAS detector at √s =7 TeV at the LHC in 2011. The measurement is performed in the semileptonic decay channel ( tt ->lνb,jj) with electrons or muons in the final state. A multivariate kinematic approach is used in order to extract the background events, a 2D likelihood is formed to simultaneously measure the tt + jet and inclusive tt cross-sections.

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