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A non-universal axigluon in generalized chiral color models leads to flavorchanging neutral currents (FCNCs) at tree level. We analyze phenomenologicallythe new contributions to $B_{q}$ (q=d, s) mixing and the related CP asymmetries(CPAs) that are generated by axigluon exchange. We find that although $\Deltam_{B_q}$ can give a strict constraint on the parameters of $b\to q$ transition,the precise measurement of $\sin2\beta_{J/\Psi K^0}$ can further exclude theparameter space of $b\to d$ transition. The axigluon-mediated effects canenhance the like-sign dimuon charge asymmetry ${\cal A}^{b}_{s\ell}$ by oneorder of magnitude larger than the standard model prediction. Accordingly,large CPA $\sin2\beta^{J/\Psi \phi}_s$ and CPA difference $\sin2\beta_{J\PsiK^0}-\sin2\beta_{\phi K^0}$ are achieved.

Axigluon on like-sign charge asymmetry ${\cal A}^b_{s\ell}$, FCNCs and CP asymmetries in B decays