25-30 September 2011
Sant Feliu de Guixols, Spain
Europe/Madrid timezone

Chiral U(1) flavor models and flavored Higgs doublets: the top FB asymmetry and the Wjj

Not scheduled
1m
Sant Feliu de Guixols, Spain

Sant Feliu de Guixols, Spain

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)

Presentation Materials

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