Contribution to a conference proceedings/Internal Report

PUBDB-2015-05749

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Measurements of $\mathbf{t\bar t} \pmb{\gamma}$ , $\mathbf{t\bar t + Z}$, and $\mathbf{t\bar t + W}$ production

Keaveney, J. ; ATLAS Collaboration (Collaboration author) ; CDF Collaboration (Collaboration author) ; CMS Collaboration (Collaboration author)

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-02/24

Report No.: DESY-PROC-2014-02

Abstract: Measurements of the production of top quark pairs in association withelectroweak vector bosons from the CMS, ATLAS and CDF collaborationsare presented. The CDF collaboration measures the cross section oftop pair plus photon production and the ratio of this cross sectionthe to inclusive top pair cross section using 6 fb$^{-1}$ of dataat $\sqrt{s} = 1.96$ TeV with the results $\sigma_{t\bar{t}\gamma}= 0.18 \pm 0.07 (stat.) \pm 0.04 (sys.) \pm 0.01 (lumi.)$ pb and $\sigma_{t\bar{t}\gamma}/\sigma_{t\bar{t}= 0.024 \pm 0.009}$. The ATLAS collaboration measures the top pairplus photon cross section at $\sqrt{s} = 7$ TeV using 1.04 fb $^{-1}$of data with the result $\sigma_{t\bar{t}\gamma} = 2.0 \pm 0.5 (stat.)\pm 0.7 (sys.) \pm 0.08 (lumi.)$. The ATLAS collaboration also setsan upper limit on $\sigma_{t\bar{t}Z}$ of 0.71 pb using 4.0 fb $^{-1}$of data at $\sqrt{s} = 7$ TeV. The CMS collaboration measures the$\sigma_{t\bar{t}Z}$ and $\sigma_{t\bar{t}V (V= W, Z)}$ cross sectionsusing 5.0 fb $^{-1}$ of data at $\sqrt{s} = 7$ TeV with the results$\sigma_{t\bar{t}V (V= W, Z)} = 0.43^{+0.17}_{-0.15} (stat.) ^{+0.09}_{-0.07}(sys.)$ pb and $\sigma_{t\bar{t}Z} = 0.28^{+0.14}_{-0.11} (stat.)^{+0.06}_{-0.03} (sys.)$ pb.

Keyword(s): talk: Durbach 2013/09/14 ; p p: scattering ; p p: colliding beams ; top: pair production ; cross section: ratio ; photon: associated production ; W: associated production ; Z0: associated production ; channel cross section: measured ; ATLAS ; CDF ; CMS ; CERN LHC Coll ; Batavia TEVATRON Coll ; experimental results ; anti-p p --> 2top photon anything ; p p --> 2top photon anything ; p p --> 2top W anything ; p p --> 2top Z0 anything ; 1960 GeV-cms7000 GeV-cms

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Contributing Institute(s):

1. Bibliothek und Dokumentation (L)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. Facility (machine) HERA

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Proceedings/Internal Report Husemann, U. (Editor)>Extern* ; Mildner, H. (Editor)>Extern* ; Roscher, F. (Editor)>Extern*
Proceedings, 6th International Workshop on Top Quark Physics (TOP2013)
20146th International Workshop on Top Quark Physics , TOP2013, Durbach Durbach, Germany, 14 Sep 2013 - 19 Sep 20132013-09-142013-09-19     Files BibTeX | EndNote: XML, Text | RIS

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