[Halld-physics] Amplitude Analysis Plots

[Jake Bennett]

Sorry to cause you grief, Curtis.

The problem stemmed from how I was filling the 4-vectors.  I had a
placeholder for the recoil vector which was just a stationary neutron.
 I think this wiped out the information about the decay plane.  I am
now filling the recoil vector using the missing 4-momentum after
reconstructing 3 charged tracks.  I can show some more plots at a
later meeting.

Jake

On Wed, Apr 27, 2011 at 9:16 AM, Curtis A. Meyer
<cmeyer at ernest.phys.cmu.edu> wrote:
> Hi Jake -
>
>   thanks for the update on this, that behavior was really driving me crazy
> as it made
> no sense based on what you were doing. Can you briefly summarize what the
> bug is
> so that when someone else sees the same thing, we may have some collective
> memory
> of a possible source?
>
>   thanks -- Curtis
> On 4/27/11 9:10 AM, Jake Bennett wrote:
>
> I showed a few plots on Monday that had some funny characteristics.
> In these plots, a flat background wave was absorbing the signal from a
> pi2->f2pi_Swave.  I found a bug that was causing this behavior.
> Things now look much more reasonable.
>
> In the attached plot, I have fitted a pi2->f2pi_Swave signal plus a
> coherent background.  You can see that the fitter does a good job
> isolating the flat background and there is no leakage from the signal.
>
> Jake
>
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> --
> Prof. Curtis A. Meyer		Department of Physics
> Phone:	(412) 268-2745		Carnegie Mellon University
> Fax:	(412) 681-0648		Pittsburgh PA 15213-3890
> cmeyer at ernest.phys.cmu.edu	http://www.curtismeyer.com/
>
>