Here are a couple of the new dilepton (e+mu) plots. Specifically, these are the dilepton mass plots.

e+ mu+:

e+ mu-:

e+ e+:

e+ e-:

To improve these plots, I have to do a few things:

• Obviously, there is an excess in the MC in the e+mu case.  Perhaps this has to do with bad modeling of the efficiency and fake rate.  I’ll investigate this.
• The mistag electron contribution is large, so I probably want to tighten the likelihood cut.
• Conversions aren’t yet incorporated correctly.  I have the expected number of conversions, but conversions are less common in the MC than in the data, so I have to make a new process for conversions.  I can do it with our current MC, but I have to modify our code a bit.

-Scott