Calibration of the momentum scale of a particle physics detector using the Armenteros-Podolanski plot

A method for calibrating the momentum scale in a particle physics detector is described. The method relies on the determination of the masses of the final state particles in two-body decays of neutral particles, which can then be used to obtain corrections in the momentum scale. A modified version of the Armenteros-Podolanski plot and the $K_S^0 \to \pi^+ \pi^-$ decay is used as a proof of principle. A precision at the $10^{-6}$–$10^{-8}$ level is achieved in simplified simulations.

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