- [ ] Do not use [GetDeviationFromParticle()](https://github.com/alisw/KFParticle/blob/a00323cd7b022430abcb3c43f18188b291b0c803/KFParticle/KFParticleBase.cxx#L2996) function [here](https://github.com/AliceO2Group/O2Physics/blob/b5a10f8fe1e7d0131383c79acf3e435cb0deebba/PWGHF/TableProducer/candidateCreatorXicToXiPiPi.cxx#L580-L582), since it returns values of order of $10^{-7}$, which is probably not the $\chi^2$. Use [kfCalculateChi2geoBetweenParticles()](https://github.com/AliceO2Group/O2Physics/blob/b5a10f8fe1e7d0131383c79acf3e435cb0deebba/Tools/KFparticle/KFUtilities.h#L376) instead like [here](https://github.com/AliceO2Group/O2Physics/blob/b5a10f8fe1e7d0131383c79acf3e435cb0deebba/PWGHF/TableProducer/candidateCreator3Prong.cxx#L572-L574).