Fix bug in the filling of particle 6x6 (X,P) matrix (!5227) · Merge requests · LHCb / LHCb

This fixes a bug in the generic function 'covMatrix' which fills the 6x6 (X,P) matrix of a particle.

This solves part of the issue in Rec#624

Edited Jul 18, 2025 by Wouter Hulsbergen

Fix bug in the filling of particle 6x6 (X,P) matrix