Run 12 Pion AN Preview

Nov 12 
I am adding a plot for the first look at raw cross ratio vs Mass for Masses above the Pi0 with
30<E12<70
4.05>Eta>3.25.
Z<.8

This is the same data set and data selection as discussed for pi0 last week and shown below.
I am noting the narrow eta peak (eta'??) is in the AN plot.  Is this telling us about large background in this region?

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 With good Run 12 calibration based on Day 58 data, I have analyzed Days 56-62.
See PDF for details.