Hiroshi Masui, Alexander Schmah
We provide a method to correct the observed azimuthal anisotropy in heavy-ion collisions for the event plane resolution in a wide centrality bin. This new procedure is especially useful for rare particles, such as $\Omega$ baryons and $J/\psi$ mesons, which are difficult to measure in small intervals of centrality. Based on a Monte Carlo calculation with simulated $v_2$ and multiplicity, we show that some of the commonly used methods have a bias of up to 15%.
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http://arxiv.org/abs/1212.3650
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