Survey-averaged Alcock-Paczynski parameters recover the BAO scale more accurately than single-redshift parameters in models with strong metric gradients, and a ~1% systematic remains that no constant AP scaling can remove.
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Quantifying the accuracy of the Alcock-Paczynski scaling of baryon acoustic oscillation measurements
Survey-averaged Alcock-Paczynski parameters recover the BAO scale more accurately than single-redshift parameters in models with strong metric gradients, and a ~1% systematic remains that no constant AP scaling can remove.