[Sane-analysis] Updates on Tracker Studies

Oscar Rondon-Aramayo or at cms.mail.virginia.edu
Mon Mar 10 23:33:47 EDT 2014


Hi Luwani,

Thank you for the report. It seems to show that at the lower energies the 
tracker is making extra two charged cluster events vs no tracker.

But there are a couple of things that are a bit unclear to me. One is why 
for the case of data with the tracker the number of events = 57915 with e- 
or e+ for E'>1.1  GeV  is greater than the number = 44415 for  E>1. GeV 
(third and fourth rows of table 2, p. 4). It would seem there should be 
fewer events (of any kind) with increasing E. Could this be a typo?

Another is why the sum of the cluster energies e_r(1) + e_r(2) are getting 
binned in some discrete groups, rather than in a more or less continuous 
distribution.

Finally, it would be good to see what are the numbers for E>1.3 GeV, which 
should be more similar for tracker vs no tracker than for the lower energy 
cuts. On p. 2 you say "nothing above 1.1 GeV". Do you mean there are no 
events with E'> 1.1 GeV? It would also be nice to see a plot of the 
differences tracker vs no tracker as a function of energy cut to see the 
trend.

Cheers,

Oscar

  
On Wed, 5 Mar 2014 23:54:13 -0500
  "Luwani Z. Ndukum" <lzn1 at msstate.edu> wrote:
> Hello Everyone,
> 
> Here's what I intended to present during the analysis meeting but I
> couldn't upload it to the SANE wiki because JLab network was down.
> https://userweb.jlab.org/~lzwano/tracker_studies.pdf
> 
> Kind regards
> Luwani



More information about the Sane-analysis mailing list