[G12] A Kinematic Fitter issue SOLVED

[Michael C. Kunkel]

Greetings,

Slight modifications to the change I made.

KinLine.C line 287 (on or about)

from
p_offset = 2.5*(pPars[part_index][sector-1][bin][2]);

to
        if(part_index == 0 || part_index == 1) p_offset = 
pPars[part_index][sector-1][bin][2];
        if(part_index == 2) p_offset = 
2.5*(pPars[part_index][sector-1][bin][2]);

This will cover g12 leptons and pions. Not sure on kaons as I thought 
they are done with multi = true. Johann would know this.

BR
MK


On 5/24/14 12:17 AM, Michael C. Kunkel wrote:
> Greetings,
>
> It took me some time, but I have solved a fitter issue. (There might be
> more)
> First let me take you down the procedure. When I asked for everyone parm
> files, I did some digging and found out that my parms and the g11 parms
> were very similar. I then used the g11 parms on my tuner fitter and got
> good pulls and probabilities. (I will show plots at the meeting). I then
> used the fitter on Dustins page, which is the one I send to people and
> noticed the same discrepancy FSU reported.
>
> I dug into the codes and found one fix so far.
> In KinLine.C at line on or about 287 there is a line that reads
> p_offset = 2.5*(pPars[part_index][sector-1][bin][2]);
>
> change this to
>
> p_offset = 1.0*(pPars[part_index][sector-1][bin][2]);
>
> I have posted my plots to
> https://jlabsvn.jlab.org/svnroot/clas/users/mkunkel/clas/kinematic_fitter/NEW_PLOTS/
>
> Annotations:
> Prob_diff_samecode_diffKinline.pdf --->Before fix
> Prob_diff_samecode.pdf ---> After Fix
> GP_PPip_tunechannel_multifalse_TUNEPULLS.pdf  --->Tune Pulls
>
> I have not and am not planning on testing this with multi = true.
>
>
> BR
> MK
> _______________________________________________
> G12 mailing list
> G12 at jlab.org
> https://mailman.jlab.org/mailman/listinfo/g12