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The tau -> pi pi pi nu_tau decay is driven by the hadronization of theaxial-vector current. Within the resonance chiral theory, and considering thelarge-Nc expansion, this process has been studied in Ref.[1]. In the light oflater developments we revise here this previous work by including a newoff-shell width for the lightest a_1 resonance that provides a good descriptionof the tau -> pi pi pi nu_tau spectrum and branching ratio. We also considerthe role of the rho(1450) resonance in these observables. Thus we bring in anoverall description of the tau -> pi pi pi nu_tau process in excellentagreement with our present experimental knowledge.

tau -> pi pi pi nu_tau decays and the a_1(1260) off-shell width revisited