  We present a search for a kinematic edge in the invariant mass distribution
of two opposite-sign same-flavor leptons, in final states with jets and missing
transverse energy. The analysis makes use of $19.4$ fb$^{-1}$ proton-proton
collision data at $\sqrt{s} = 8$ TeV. The data have been recorded with the CMS
experiment. Complementary methods have been used for the background estimation,
which when combined achieve a total uncertainty of $5\%$ ($10\%$) for leptons
in the central (forward) rapidity of the detector. We do not observe a
statistically significant signal and the results are consistent with the
background-only hypothesis.
