Eta

Fig.1. Statistics. Eta events (z>0.5) for three targets with their D (N per 80 bins). Fit attempt with Gaus:


Fig.2. Eta from Carbon target (N per 160 bins):


Fig.3 Eta mass peaks of C with various cuts on it:
left: z>0.5(black) + 20< opening_angle <58(green) , right opening angle + z>0.8





Eta on earlier plots

Fig1. Pi0_Mass= 0.135 GeV. Eta_Mass=0.55 GeV



Fig2.



Fig.3 Eta mass peaks of C with various cuts on it: