Speaker
Chaehyun Yu
(KIAS)
Description
We construct flavor-dependent chiral U(1)' models
with a Z' boson which couples to the right-handed up-type quarks
in the standard model. To make the models have realistic renormalizable Yukawa couplings, we introduce new Higgs doublets with nonzero U(1)' charges. Anomaly-free condition can be satisfied by adding extra chiral fermions. We show that these models could analyze the discrepancy between the SM prediction and empirical data in the top forward-backward asymmetry at the Tevatron. We also
discuss the top charge asymmetry at the LHC in this model.
We emphasize that unlike the simple Z' model, our model could be compatible with the stringent constraints from the same sign top pair production because of destructive interferences between contributions from the Z' and Higgs boson exchanges.
Author
Chaehyun Yu
(KIAS)
Co-authors
Dr
Yuji Omura
(KIAS)
Prof.
pyungwon ko
(Korea Inst. for Advanced Study (KIAS))
