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We study the flow harmonic distribution in collisions of deformed nuclei. To do this, we use the standard Gram-Charlier method to find the higher-order correction to the well-known Bessel-Gaussian distribution. We find that, apart from the necessity of including a shift parameter ${\overline{v}}_{n}$, the modified flow distribution accurately describes the distribution of flow harmonics in a system formed after collisions of deformed nuclei with quadrupole and octupole deformity. Using the shifted radial distribution arising from this method, we scrutinize the effect of deformation on flow distribution. We also propose a way to measure ${\overline{v}}_{2}$ in deformed-nucleus collisions.
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