[Clas_lmd] Finished Eta->3pi gamp

[Michael Kunkel]

Greetings

The fit was performed on the mm/ppippim to be pi0.
No other kinematic constraints were applied, although the mm/p fit to eta could be applied along with the mm/ppippim to pi0.  

Since the fit was performed on the missing pi0, it is feasible to use the missing momentum as the pi0 momentum, but in the gamp files I provided I only included the detected fitted momentums, i.e. proton pi+ pi- and beam photon momentum. 

BR
MK

Sent from my iPhone

> On Oct 23, 2013, at 17:50, Dennis Weygand <weygand at jlab.org> wrote:
> 
> Hello MK,
> Can you give me details of the kinematic fit?
> Was the mm/proton fit to the eta mass?
> Was the momentum of the pi0 output of this fit?
> Dennis
> 
>> On Oct 23, 2013, at 3:57 PM, Michael C. Kunkel wrote:
>> 
>> Greetings,
>> 
>> I have uploaded 3 gamp files to /volatile/clas/clasg12/mkunkel/ETA_3PI. This was the requested format of the data with the requested cuts as per the meeting on October 22, 2013.
>> 
>> Signal.gamp:   Signal of eta +- 3sigma arond peak. Peak was 0.549. Sigma was 0.0089, i.e.  0.5222GeV to  0.5756 GeV
>> See fig 0.2 at https://wiki.jlab.org/lmd/index.php/Michael_C._Kunkel
>> 
>> 
>> highsideband.gamp:   High mass eta side band mm_P_fit > 0.6 && mm_P_fit < 0.7, where mm_P_fit is the missing mass off of the proton fitted with the kinematic fitter.
>> 
>> 
>> lowsideband.gamp:    low mass eta side band mm_P_fit > 0.4 && mm_P_fit < 0.5
>> 
>> BR
>> MK
> 
> --
> Dennis Weygand
> weygand at jlab.org
> (757) 269-5926 (office)
> (757) 870-4844 (cell)
> 
> 
> 
> 
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