[Rgc] setting up the analysis trains for RGC

silvia at jlab.org silvia at jlab.org
Thu Jun 9 07:07:06 EDT 2022


Dear all,
following the discussion we had yesterday at the RC meeting, I'd like to
have feedback from the various people which will be involved in RGC data
analysis, to start the work on the definition of the conditions to produce
trains during the cooking.

For n/pDVCS and SIDIS I think what we had in RGB would be fine:
      "    sidisdvcs:",
      "      id: 4",
      "      forward: 11:X+:X-:Xn",
      "      beamEnergy: 10.60",
      "      targetPDG: 2112 ",
      "      electron: Q2>0.95 && W>1.95 && p>1 && vz>-25 && vz<20",

Harut and other SIDIS people, please confirm that this would be ok for you.
Could this be OK for DIS as well? Sebastian please let me know.

We should also create a custom wagon for elastic events to be used to
measure PbPt: following the discussion we had yesterday, we should require
detection of both electron and proton and then define a set of exclusivity
cuts to reduce the background already at the train level. The people who
volounteered yesterday (or will volounteer) for the elastic analysis, you
should do a study (using RGA data and/or simulations) to establish these
cuts, and then we can ask Raffaella to please create the custom wagon.

Anything else? Please let me know.

Thanks a lot and best regards,
Silvia





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