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Can LHC observe an anomaly in ttZ production?

F. Richard 1
1 ILC
LAL - Laboratoire de l'Accélérateur Linéaire
Abstract : The cross section for production at the 7 TeV LHC has been measured. For the first time it therefore becomes possible to measure Z couplings to top quarks. Interpreting the notorious LEP1 anomaly on Z couplings to b quarks in terms of an extra-dimension model, one expects an excess, as large as a factor 2, on the rate which may already become significant with the LHC at 8 TeV data. Other schemes are reviewed which also predict deviations of couplings. The size of the effect and a dramatic increase of the top quarks with the right chirality should confirm our interpretation of the underlying mechanism. Complementary signals observable at LHC are also briefly reviewed.
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http://hal.in2p3.fr/in2p3-00813170
Contributor : Sabine Starita <>
Submitted on : Monday, April 15, 2013 - 11:13:11 AM
Last modification on : Wednesday, September 16, 2020 - 5:42:23 PM

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  • HAL Id : in2p3-00813170, version 1
  • ARXIV : 1304.3594

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IN2P3 | LAL | CNRS

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F. Richard. Can LHC observe an anomaly in ttZ production?. 2013. ⟨in2p3-00813170⟩

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