Systematics error for the charged pion analysis.

All systematic errors were investigated in paraller by Heidi and myself several time over several DST generation.

All information are very nicely summarized by Heidi thesis, page 122.

• Particle identification : 1.5%
• Sector difference : 4 %
• Efficiency*accetance correction 1 %
• pt/mt extrapolation : 3%
• y extrapolation : 4%

I think that those errors are already quit intesively inversigated and no additional checks need to be done.

-- GosiaSudol - 07 May 2019