Meeting #120

Results with Zilu's omega cut:

Zilu suggested to check, how the asymmetries change if only events with omega~90MeV are considered:

1.)

Results with Theta Cut:

Zilu also suggested a cut on polar angle between target spin and missing momentum. Therefore I checked, what I get, if I consider only events that are less than 25deg away from 85deg.

2.)

Results with Theta Cut:

Zilu also pointed out, that Nitrogen dilution factor should not be considered in the deuteron channel. Therefore I modified the dilution and recalculated the asymmetry. There is also an issue of the beam polarization.

3.) (old)

4.) (new)

MCEEP simulation

I continued with the MCEEP simulation. I am trying to incorporate MCEEP into my simulation. However, the problem is, that MCEEP simulation is not affected by the event cuts that I use. This causes the discrepancy between the simulation and the data, although they agreed when looking at raw histograms. See figures below:

5.) 6.) 7.)

(red) - Elastic + QE deuteron data
(blue) - Elastic Raw MCEEP simulation
(cyan) - Elastic Raw MCEEP simulation using my script
(violet) - Elastic deuteron data using my script.


Therefore, I decided to check which cuts take most of my events away (one more time) and then correct simulation for this discrepancy.

When no events cuts are used:

8.)

No PID cut:

9.)
Last modified: 04/03/13