Preprint/Internal Report

PUBDB-2014-03737

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Combination of cross-section measurements for associated production of a single top-quark and a W boson at $\sqrt{s}=8$ TeV with the ATLAS and CMS experiments

CMS Collaboration (Collaboration author)DESY* ; ATLAS Collaboration (Collaboration author)DESY*

2014

Report No.: ATLAS-CONF-2014-052; CMS-PAS-TOP-14-009

Abstract: A combination of cross-section measurements for the associated production of a top quark and a W boson in proton-proton collisions at s √ =8 TeV by the ATLAS and CMS experiments is presented. The two measurements are based on integrated luminosities of 20.3 fb −1 and 12.2 fb −1 , respectively. The combined production cross section of a single top quark and a W boson is determined as σ tW =25.0±1.4 (stat.) ±4.4 (syst.) ±0.7 (lumi.) pb = 25.0±4.7 pb, in agreement with the NLO+NNLL expectation. A 95\% C.L. lower limit on the magnitude of the CKM matrix element V tb of |V tb |>0.79 is extracted from the cross-section measurement.

Note: Imprint: 29 Sep 2014; Work within the Top Physics LHC (TOP-LHC-WG) working group.More information at http://twiki.cern.ch/twiki/bin/view/LHCPhysics/TopLHCWG. Copyright 2014 CERN for the benefit of the ATLAS and CMS Collaborations.

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)

Research Program(s):

1. Experiments at LHC (ATLAS) (POF2-512) (POF2-512)

Experiment(s):

1. LHC: ATLAS

Appears in the scientific report 2014

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