Top A_FB at the Tevatron vs. charge asymmetry at the LHC in chiral U(1) flavor models with flavored Higgs doublets

TL;DR

This paper explores chiral U(1)^ flavor models with flavored Higgs doublets that can simultaneously explain the top forward-backward asymmetry at the Tevatron and the top charge asymmetry at the LHC, consistent with experimental data.

Contribution

It introduces specific parameter spaces in chiral U(1)^ models with flavored Higgs fields that account for observed top asymmetries without excessive same-sign top production.

Findings

Models can enhance top asymmetries at Tevatron and LHC.

Parameter spaces accommodate a 125 GeV Higgs boson.

Experimental data constraints are satisfied within these models.

Abstract

We consider the top forward-backward (FB) asymmetry at the Tevatron and top charge asymmetry at the LHC within chiral U(1)^\prime models with flavor-dependent U(1)^\prime charges and flavored Higgs fields, which were introduced in the ref. [65]. The models could enhance not only the top forward-backward asymmetry at Tevatron, but also the top charge asymmetry at LHC, without too large same-sign top pair production rates. We identify parameter spaces for the U(1)^\prime gauge boson and (pseudo)scalar Higgs bosons where all the experimental data could be accommodated, including the case with about 125 GeV Higgs boson, as suggested recently by ATLAS and CMS.