Standard Model Top Quark Asymmetry at the Fermilab Tevatron

Details Standard Model Top Quark Asymmetry at the Fermilab Tevatron Standard Model Top Quark Asymmetry at the Fermilab Tevatron

2005-09-23

arxiv.org/abs/hep-ph/0509267v2

Phys.Rev. D73 (2006) 014008

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 p., 10 embedded figs., comment added, version to appear in PRD

Scientific paper

10.1103/PhysRevD.73.014008

Top quark pair production at proton-antiproton colliders is known to exhibit a forward-backward asymmetry due to higher-order QCD effects. We explore how this asymmetry might be studied at the Fermilab Tevatron, including how the asymmetry depends on the kinematics of extra hard partons. We consider results for top quark pair events with one and two additional hard jets. We further note that a similar asymmetry, correlated with the presence of jets, arises in specific models for parton showers in Monte Carlo simulations. We conclude that the measurement of this asymmetry at the Tevatron will be challenging, but important both for our understanding of QCD and for our efforts to model it.

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