13–20 mars 2011
La Thuile
Fuseau horaire Europe/Paris

Top-quark forward-backward asymmetry in Randall-Sundrum models

16 mars 2011, 09:55
15m
La Thuile

La Thuile

Rencontres de Moriond Planibel Hotel - La Thuile Aosta Valley 11016 La Thuile (Aosta), Italy Phone : 39 (0)1 65 88 45 41 Fax : 39 (0)1 65 88 45 35
Ordinary Theory Flavour Physics

Orateur

Susanne Westhoff (Mainz University)

Description

I discuss the anomalously large asymmetry in top-antitop-quark production within Randall-Sundrum models. Kaluza-Klein gluons generically have the potential to generate a large forward-backward asymmetry at tree level. In models with an anarchic flavour structure, however, their coupling to the light quarks inside the proton is strongly suppressed. I show that even though this suppression is lifted at one-loop level, the large asymmetry cannot be explained in a natural framework of warped extra dimemsions.

Authors

Florian Goertz (Mainz University) Martin Bauer (Mainz University) Susanne Westhoff (Mainz University) Torsten Pfoh (Mainz University) Ulrich Haisch (Mainz University)

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