[Common] Sanitize power-law mapping in corner cases #12827
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This PR addresses a corner case in the power-law mapping of data to MC used in the centrality framework that was leading to NaNs when specific sets of parameters were used. Interestingly, even if the MC calibration mapping procedure has been power-law-based for many years, this corner case in which parameters led to NaNs in the intermediate evaluation has only appeared in light ion monte carlo. This adjustment will sanitize all instances of this effect also in the future, as the mapping function is adjusted in the evaluation code (no change needed in ccdb).
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This PR addresses a corner case in the power-law mapping of data to MC used in the centrality framework that was leading to NaNs when specific sets of parameters were used.
Interestingly, even if the MC calibration mapping procedure has been power-law-based for many years, this corner case in which parameters led to NaNs in the intermediate evaluation has only appeared in light ion monte carlo. This adjustment will sanitize all instances of this effect also in the future, as the mapping function is adjusted in the evaluation code (no change needed in ccdb).