Monte Carlo event generators & the top quark forward-backward asymmetry

Jan Winter; Peter Z. Skands; Bryan R. Webber

doi:10.1051/epjconf/20134917001

Monte Carlo event generators & the top quark forward-backward asymmetry

Jan Winter, Peter Z. Skands, Bryan R. Webber

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

5 Citations (Scopus)

Abstract

The leading-order accurate description of $t\bar t$ 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 [1] 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.

Original language	English
Title of host publication	EPJ Web of Conferences
Volume	49
DOIs	https://doi.org/10.1051/epjconf/20134917001
Publication status	Published - 2013
Externally published	Yes

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10.1051/epjconf/20134917001

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abstract = "The leading-order accurate description of $t\bar t$ 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 [1] 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. ",

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AB - The leading-order accurate description of $t\bar t$ 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 [1] 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.

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Monte Carlo event generators & the top quark forward-backward asymmetry

Abstract

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QCD coherence and the top quark asymmetry

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