[Clas_lmd] Eta->3pi

[Michael C. Kunkel]

Greetings,

For clarity, do you want a single gamp file for the peak and one for the 
background,
3 sigma for peak and 0.6 - 0.6 GeV for background, or one gamp file as 
your previous email suggests?

BR
MK



On 10/23/13 3:00 PM, Dennis Weygand wrote:
> 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 <mailto:weygand at jlab.org>
> (757) 269-5926 (office)
> (757) 870-4844 (cell)
>
>
>
>

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