Fitting B/C cosmic-ray data in the AMS-02 era: A cookbook

Understand

AMS-02 on the International Space Station has been releasing data of unprecedented accuracy.

• This poses new challenges for their interpretation.
• We refine the methodology to get a statistically sound determination of the cosmic-ray propagation parameters.
• We inspect the numerical precision of the model calculation, nuclear cross-section uncertainties, and energy correlations in data systematic errors.