Practical considerations for the effect of finite coverage on the azimuthal dependence of global spin alignment

摘要

The global spin alignment of vector mesons is a powerful probe to study the vorticity field of the system produced in noncentral relativistic heavy-ion collisions. However, the experimental correction of the global spin alignment observable remains a longstanding issue. In this study, we propose a method to correct for the effect of finite pseudorapidity coverage when extracting the azimuthal dependence of spin alignment parameter rho(00). The potentially existing intrinsic spin alignment effects are taken into consideration together with the acceptance correction. The method presented in this paper is verified in a Monte Carlo simulation, it allows the measurements of azimuthal dependence of vector mesons global spin alignment to be conducted properly and accurately.

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