[Clas_lmd] Eta->3pi

[Dennis Weygand]

We don't have a choice at this point: let's go with the fitted, but cut much wider about the eta as I believe I will need to look carefully at the high sideband, say as high as .7 GeV
DPW

On Oct 23, 2013, at 2:28 PM, Michael C. Kunkel wrote:

> Greetings,
> 
> I have completed the data analysis part of the eta->3pi with the cuts provided to us at Tuesdays meeting.
> Unfortunately the eta topology with these cuts looked very poor, see nofit_Eta_3pi.pdf attached.
> 
> I took it upon myself to use the kinematic fitter that Georgie and I have for these events. I fit the missing spectrum of proton pi+ pi- to that of a neutral pion.
> The only cut needed now would be a Pull Probability cut, which I took to be above 10%, see fitted_Eta_3pi.pdf.
> 
> I would like to know if the kinematic fitted spectrum is acceptable so that I can give these events in gamp format.
> 
> Please try to respond to this email, so that I may make the deadline I promised.
> 
> Also, I estimated the number of events incorrectly in the meeting. I thought it to be around 150K, I had the wrong cross section in my head when I estimated it. As you can see, there are only 16K events.
> 
> BR
> MK
> <nofit_Eta_3pi.pdf><fitted_Eta_3pi.pdf>

--
Dennis Weygand
weygand at jlab.org
(757) 269-5926 (office)
(757) 870-4844 (cell)




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