Speaker
Dr
Chaehyun Yu
(KIAS)
Description
We present U(1) flavor models for leptophobic Z' with flavor dependent couplings to the right-handed up-type quarks in the Standard Model,
which can accommodate the recent data on the top forward-backward (FB)
asymmetry and the dijet resonance associated with a W boson
reported by CDF Collaboration.
Such flavor-dependent leptophobic charge assignments generally require
extra chiral fermions for anomaly cancellation.
Also the chiral nature of U(1)' flavor symmetry calls for
new U(1)'-charged Higgs doublets in order for the SM fermions to have
renormalizable Yukawa couplings.
The stringent constraints from the top FB asymmetry at the Tevatron
and same sign top pair production at the LHC can be evaded
due to contributions of the extra Higgs doublets.
Primary author
Dr
Chaehyun Yu
(KIAS)
Co-authors
Prof.
Pyungwon Ko
(KIAS)
Dr
Yuji Omura
(KIAS)