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- W2034032401 abstract "In this paper we reexamine how to utilize the previous proposed color-octet axial-vector boson ${Z}_{mathrm{C}}$ to explain the $3.4ensuremath{sigma}$ anomaly of $toverline{t}$ forward-backward (FB) asymmetry ${A}_{mathrm{FB}}$ for ${m}_{toverline{t}}>450text{ }text{ }mathrm{GeV}$ observed by CDF. Our numerical results indicate that the best-fit parameters are ${g}_{A}^{q}=0.07$, ${g}_{A}^{Q}=3$, and ${M}_{mathrm{C}}=440text{ }text{ }mathrm{GeV}$, which are obtained by fitting the mass dependent ${A}_{mathrm{FB}}$ and total cross section data provided by a recent CDF measurement. Here ${g}_{A}^{q}({g}_{A}^{Q})$ and ${M}_{mathrm{C}}$ are the axial couplings among ${Z}_{mathrm{C}}$ with the first two (the third) generation quarks, and ${Z}_{mathrm{C}}$ mass, respectively. We also calculate one-side forward-backward asymmetry ${A}_{mathrm{OFB}}$ for top and bottom quark pair production at the LHC, focusing on the new contributions from ${Z}_{mathrm{C}}$. Our studies show that ${A}_{mathrm{OFB}}$ can be utilized to measure the properties of new particle ${Z}_{mathrm{C}}$." @default.
- W2034032401 created "2016-06-24" @default.
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- W2034032401 date "2011-11-16" @default.
- W2034032401 modified "2023-09-27" @default.
- W2034032401 title "New color-octet axial vector boson revisited" @default.
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- W2034032401 doi "https://doi.org/10.1103/physrevd.84.094019" @default.
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