Model independent analysis of the forward-backward asymmetry of top quark production at the Tevatron

Preprint

28 June 2010

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.0912.1105

Abstract

Motivated by a possible anomaly in the forward-backward (FB) asymmetry of top quark (A_{\rm FB}) observed at the Tevatron, we perform a model independent analysis on q \bar{q} \to t \bar{t} using an effective lagrangian with dim-6 four-quark operators. We derive necessary conditions on new physics structures and the couplings that are consistent with the t\bar{t} production cross section and A_{\rm FB} measured at the Tevatron, and discuss possible new physics scenarios that could generate such dim-6 operators.

Keywords

MODEL INDEPENDENT ANALYSIS
BACKWARD ASYMMETRY
FORWARD BACKWARD
ASYMMETRY OF TOP
TOP QUARK
TEVATRON

All Related Versions

Version 1, 2009-12-07, ArXiv
Version 2, 2010-06-28, ArXiv
Version 1, 2010-12-01, ArXiv (Unconfirmed version)
Published version: Physics Letters B, 691 (5), 238.

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