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This note investigates the effects of a misaligned tracking system on theanalysis of B decays. Misalignment effects of both the vertex locator and theinner and outer T-stations have been studied. $z$-scaling effects of the vertexlocator are also considered. It is proven that misalignments of the order ofthe detector single-hit resolutions have little or negligible effects on thequality of the reconstruction and of the analysis of B decays. The studies wereperformed with a sample of $B^0_{(s)} \to h^+h^{'-}$ decays, but the impact ofmisalignments on the performance of the pattern recognition algorithms and onthe primary vertex resolutions, assessed for the first time, are rather generaland not restricted to $B^0_{(s)} \to h^+h^{'-}$ decays.

Impact of misalignments on the analysis of B decays