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

Abstract

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 realistic renormalizable Yukawa couplings. The stringent constraints from the top FB asymmetry at the Tevatron and the same sign top pair production at the LHC can be evaded due to contributions of the extra Higgs doublets. We also show that the extension could realize cold dark matter candidates.

40 pages, 10 figures, added 1 figure and extended discussion, accepted for publication in JHEP

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• Higgs phenomenology in Type-I 2HDM with U(1)_H Higgs gauge symmetry
• LHC diphoton Higgs signal and top quark forward-backward asymmetry in quasi-inert Higgs doublet model
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• Dark Matter and Dark Force in the Type-I Inert 2HDM with Local U(1)_H Gauge Symmetry
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• Interpretations and Implications of the Top Quark Rapidity Asymmetries $A_{FB}^t$ and $A_{FB}^{\ell }$
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• Top quark physics in the Vector Color-Octet Model
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• Constraining Unparticles from Top Physics at TeVatron
• Higgs flavor phenomenology in a supersymmetric left-right model with parity
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• Colored bosons on top FBA and angular cross section for $t\bar{t}$ production