Top AFB and charge asymmetry in flavor-dependent chiral U(1)' model
Abstract
We study the flavor-dependent chiral U(1)' model where only the right-handed up-type quarks are charged under U(1) and additional Higgs doublets charged with U(1)' charges are introduced to give proper Yukawa interactions. We find that in some parameter regions, this model is not accommodated only with the top forward-backward asymmetry at the Tevatron, but also with the charge asymmetry at the LHC. At the same time, the cross section for the same-sign top-quark pair production in this model could be below the upper limit at the LHC.
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