General Meson SF Meeting Summary 10/14/21

PARTICIPANTS: Ali, Carlos A., Douglas, John A., Patrick, Richard, Rolf, Stephen, Yulia, Tanja, Tobias

STRUCTURE FUNCTIONS (Richard)

• Working with Patrick on plot for analysis note

• Simulation for IP8 Fun4All should be ready

• For both IP6 and IP8 issue at low energies with EIC-Smear

• Updates:

• simulation subsystems should be working now, ie. inverted B0 was fixed
• still working on figuring out why no events at low energy electron 5 GeV

• Discussion:

• Fun4All has implemented in it the additional roman pot for secondary focus, so can look at that for detection efficiency, how many events one loses compared to IP6, etc.
• Plan on running events through Fun4All with all subsystems included
• Make occupancy plots for all subdetectors

• Cross-validations

• First focus on IP6 and run meson SF events through frameworks Fun4All and also DD4HEP
• Compare results
• IP8 should follow and not require additional validations

• Action items:

• Complete Meson SF projection and impact study
• Generate occupancy plots for IP8 (ZDC, Roman pots, Off-Momentum, B0) and detector efficiencies
• Run meson SF events through DD4HEP IP6 for cross-validation

PION FORM FACTOR (Stephen)

• Finalized IP6 analysis

• Analysis note posted

• Next: IP8

KAON FORM FACTOR (Ali)

• Ran events through Fun4All

• event distributions to validate Fun4All vs. DEMP generator
• weights are working
• primary particles look fine

• Limitations with branching ratio - neutral decay and ZDC does not look good so far

• Neutral decay impacted by inactive regions between IP and ZDC - needs regions to be active (needs to be fixed)

• Realistic ZDC acceptance efficiency requires neutral decay branching ratio

• Action item:

• check neutral decay with 5 on 100 energies

NEXT MEETING: 28 OCTOBER AT 5:00PM ET