Electroweak contribution to the top quark forward-backward asymmetry at the Tevatron

By Wolfgang Hollik, D. Pagani. 2011

169 citations recorded by the source corpus.

The electroweak contributions to the forward-backward asymmetry in the production of top-quark pairs at the Tevatron are evaluated at O({alpha}{sup 2}) and O({alpha}{alpha}{sub s}{sup 2}). We perform a detailed analysis of all partonic channels that produce an asymmetry and combine them with the QCD contributions. They provide a non-negligible addition to the QCD-induced asymmetry with the same overall sign, thus enlarging the standard model prediction and diminishing the observed deviation. For the observed mass-dependent forward-backward asymmetry a 3{sigma} deviation still remains at an invariant-mass cut of M{sub tt}>450 GeV.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7ad0908871aadd255e44ecf958bfabbcf8511ddb

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In Nuclear and High Energy Physics

  1. Stefan Kallweit
  2. Stefano Pozzorini
  3. Ansgar Denner
  4. Stefan Dittmaier
  5. M. Grazzini
  6. M. Schönherr
  7. M. Wiesemann
  8. Gudrun Heinrich

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