Monte Carlo event generators & the top quark forward-backward asymmetry
1 Max-Planck-Institute for Physics, Föhringer Ring 6, D-80805, Munich, Germany
2 PH-TH Department, CERN, CH-1211 Geneva 23, Switzerland
3 Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, UK
The leading-order accurate description of production, as usually employed in standard Monte Carlo event generators, gives no rise to the generation of a forward-backward asymmetry, AFB. Yet, non-negligible - differential as well as inclusive - asymmetries may be produced if coherent parton showering is used in the hadroproduction of top quark pairs. In this contribution we summarize the outcome of our study  of this effect. We present a short comparison of different parton shower implementations and briefly comment on the phenomenology of the colour coherence effect at the Tevatron.
© Owned by the authors, published by EDP Sciences, 2013
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