[Hps-analysis] meeting TODAY

Stepan Stepanyan stepanya at jlab.org
Fri Jun 10 10:56:51 EDT 2016

Dear all,

I may not be able to be at the meeting, so I want to send some comments 
on accidentals in Esum,
3 figures that are posted on the meeting page.
Clearly it is important to select true coincidences with the cut |dt|<1 
ns. But even after that cut there
will be accidental pairs left, tiny number, but still. In order to 
estimate the number of accidental pairs
in the selected events, one simply should count number of events in one 
of peaks at wrong beam buckets.
I clearly can see bands on +/- 4 ns, peaks at +/- 2 ns are not clearly 
seen because of overlap with tails
of the main peak at 0. So, using peak on +/- 4 ns one can estimate how 
many accidentals are left in
|dt|<1 ns cut (if statistics is not good in one accidental peak, one can 
fold in many together).


On 6/10/16 7:21 AM, Nathan Baltzell wrote:
> Hi Everyone,
> We will have our weekly meeting TODAY at 11:00 (jlab time).
> Here's a preliminary agenda:
> https://confluence.slac.stanford.edu/display/hpsg/June+10%2C+2016+DAWG+Meeting
> Bluejeans connection:
> https://bluejeans.com/722990411
> - Matt & Nathan
> _______________________________________________
> Hps-analysis mailing list
> Hps-analysis at jlab.org
> https://mailman.jlab.org/mailman/listinfo/hps-analysis

More information about the Hps-analysis mailing list