[Clas12_verystrange] [Clas12_software] CLAS12 Pre-Release Coatjava 4a.7.5 and GEMC 4a.2.0

[Lei Guo]

I think Shankar didn’t have the same issues with the protons from Lambda events. Shankar, care to comment?

Lei

Lei Guo
Associate Professor
Physics Department
Florida International University
Miami, FL

email: leguo at fiu.edu <mailto:leguo at fiu.edu> or lguo at jlab.org
Office:305-348-0234

> On Aug 15, 2017, at 3:24 PM, Michael Dugger <dugger at jlab.org> wrote:
> 
> 
> Hi,
> 
> I'm getting strange results and I would like to see if others are seeing something similar.
> 
> Using Coatjava 4a.7.5 and GEMC 4a.2.0 for the Xi^- K^+ K^+ reaction, I get for beta vs. momentum of charged particles:
> 
> * (using for beta and momentum: REC_Particle) the plot https://userweb.jlab.org/~dugger/vs/pidTest.png
> 
> At zero beta I get a bunch of garbage and there are not many protons.
> 
> If I neglect low values of beta:
> https://userweb.jlab.org/~dugger/vs/pidTest2.png
> 
> * (using REC_Particle for momentum and constructing beta from REC_Scintillator and FT_particles information)
> the plot https://userweb.jlab.org/~dugger/vs/tmpPID.png
> 
> It looks like there is good information in the files but the beta from REC_Particle_beta is messed up for me. In particular, protons are very messed up.
> 
> I probably did something wrong in processing the events but I wanted to check to see if anyone else is seeing problems.
> 
> Take care,
> Michael
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