The LEP direct limit is based on direct searches for the chargino at the LEP experiments. Taking
into account the center of mass energy √s = 208 GeV, the highest value of mass allowed by
phase-space is about 104 GeV. These limits could be somewhat weaker in our specific model (mSUGRA
with choice of parameters indicated), since we allow for lighter sneutrinos than the LEP limits.
We choose to use mSUGRA because
a) it is easily reproducible, given the software versions.
b) it has been used as a standard candle by Run I at the Tevatron, and in the LHC TDR's.
A different choice of parameters would be to set m0 to some high value, (such as 800 instead
of 60). This makes the sleptons heavier, causing the branching ratio of chargino/neutralino to
trileptons to drop to about 3% (from about 95% at m0=60).
We are not sensitive in such a "high-m0" scenario.