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We perform studies of the and masses by splitting the sample based on
- Pre/post Target Silicon runs35
- Soft pion momentum
The only systematic effect originates from splitting the data according to the
momentum of the soft pion,
and only in the case of the .
This effect is illustrated by the last two points in the top plot in
sc_mass:split1. In this case, a systematic error of
systematic errors from split samples. The solid and dashed lines are the
measurement and statistical errors. Points 1 & 2 are for particle and
antiparticle separately. Points 3 & 4 are for runs less than and greater than 9750.
Points 5 & 6 split the sample at .
Points 7 & 8 split the sample
in momentum at 70 . Points 9 & 10 split the sample in soft pion
momentum at 5 .