Here one can find comparison of the event mixing background and same event background
for the full large target with and without MDC HV problem.

Comparison of the unlike-sign background with mixed event one

Comparison of the like-sign (e-e-) pair distribution from the same event analysis and mixed event.

Comparison of the like-sign (e+e+) pair distribution from the same event analysis and mixed event.

-- GosiaSudol - 02 May 2007