General Meson SF Meeting Summary 10/28/21

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PARTICIPANTS: Garth, Patrick, Richard, Rolf, Stephen, Tanja, David R., John A.,


EIC IMPACT STUDIES (Patrick)

  • Phase space: large x/Q2 and small x/Q2 regions
  • Statistical and systematic uncertainties
  • Method 1
  • assume 1.2% systematic uncertainty - dominant
  • Number of events from simulation projections
  • Method 2:
  • assume 1.2% systematic uncertainty - dominant
  • Number of events from calculation
  • See strange behavior in the PDFs
  • Cross section vs. kinematics. As xL gets large see large variations in fits since not number of events is small --> xL too close to 1 then data cannot be described well
  • Action:
  • Reperform fits with cut on xL
  • If needed can implement cut in generator - however, in data have resolutions so can reach xpi>1, but don't have that in model, so cut should really come from model


FAR FORWARD DETECTORS OCCUPANCIES (Richard)

  • IP6 with four different energies and compare to Yellow Report studies
  • Hole in right spot?
  • Neutrons seem to move
  • Actions:
  • major issues need to be resolved
  • backup plan: use optics
  • need G4 to determine real detection fractions
  • npi0 (neutrals) could perhaps do with ZDC and no B0 and nothing else - but cannot do charged kaon decay
  • prepare occupancy plots without B0 - use processed events with corrected energies (5 on 41)
  • focus on pions


NEXT MEETING: THURSDAY NOVEMBER 5 AT 1PM ET