Constraints on four-fermion interactions from the charge asymmetry at hadron colliders
IFIC (UVEG/CSIC), Apartado de Correos 22085, 46071, Valencia, Spain
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Accepted: 30 March 2016
Published online: 13 April 2016
The charge asymmetry in top quark production at hadron colliders is sensitive to beyond-the-Standard-Model four-fermion interactions. In this study we compare the sensitivity of cross-section and charge asymmetry measurements to effective operators describing four-fermion interactions and study the limits on the validity of this approach. A fit to a combination of Tevatron and LHC measurements yields stringent limits on the linear combinations and of the four-fermion effective operators.
© The Author(s), 2016