[PWGDQ] added track slope dependence to residals plots#15999
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mcoquet642 merged 1 commit intoAliceO2Group:masterfrom Apr 28, 2026
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The X and Y residual plots now have an additional dimension filled with the track slope in the same coordinate. The residual vs. slope dependencies are needed to identify and correct possible z misalignments of the MCH detection elements. In addition, a cut has been added to the maximum MFT-MCH matching chi2 in order to select only good matches for the global alignment analysis. Finally, the quadrants are now computed from the MFT track position instead of the MCH one, since we noticed some bias in the MCH DCA in MC simulations.
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The X and Y residual plots now have an additional dimension filled with the track slope in the same coordinate.
The residual vs. slope dependencies are needed to identify and correct possible z misalignments of the MCH detection elements.
In addition, a cut has been added to the maximum MFT-MCH matching chi2 in order to select only good matches for the global alignment analysis.
Finally, the quadrants are now computed from the MFT track position instead of the MCH one, since we noticed some bias in the MCH DCA in MC simulations.