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Top-Quark Forward-Backward Symmetry | | Susanne Westhoff
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23 May 2011 | | Abstract: | Top-quark pair production at the Tevatron is discussed within the
Randall-Sundrum model of warped extra dimensions. Generically, the exchange of
massive Kaluza-Klein gluons has the potential to generate a large
forward-backward asymmetry. In models with an anarchic flavor structure,
however, their coupling to the light quarks inside the proton is strongly
suppressed. The consequent suppression of the asymmetry at tree level is lifted
at next-to-leading order. Still, it is not possible to increase the
forward-backward asymmetry with respect to the Standard-Model prediction in
this framework. | | Source: | arXiv, 1105.4624 | | Services: | Forum | Review | PDF | Favorites | |
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