General MWG Meeting Summary 3/16/20

PARTICIPANTS

All remote: D. Romanov, G. Huber, J. Arrington, T. Federico, R. Ent, R. Trotta, Y. Furletova, H-W. Lin, S. Kay

SUMMARY NOTES

• Much work has been done on addressing action items from 2/25 meeting (see Richard's summary slides)

• mesonMC works in Geant4
• mesonMC now includes neutron and Lambda final states
• crossing angles checked and updated
• y-cut (0.01,095) has been applied
• statistical uncertainty table has been checked and updated
• mesonMC script for large number of bins has been generated

• Found that run into problems when running/transferring large files within the global EIC software framework - fixed by making a new version that allows to run the analysis more centrally

• Detection fractions

• for proton almost 100%
• for neutron: have the data, but still need to analyze
• for K/Lambda: seems that not all Lambdas decay properly - note that if it doesn't decay it will seem to have a good detection fraction since close to proton in mass. Also, the fraction of Lambdas that doesn't decay would likely be misidentified as (heavy) neutrons.

• Virtual planes are ready - working on analysis chain with reconstruction for K-Lambda, also need to understand decay for this

• Discussion of Richard's Meson SF slides for the EIC Yellow Report 1st Workshop (https://indico.bnl.gov/event/7449/timetable/#20200319)

• Overall Comments for Structure:

• Take 1-2 examples from the EPJA paper, e.g. pion SF and pion FF and explain implications for detectors, e.g. need detection fraction, which affects forward detector design, and need calorimetry for large-x resolution
• Show kinematics for scattered electron, e.g. momentum/angular distribution and point out ongoing work on plugins for simulation, i.e. demonstrate how the analysis chain works
• Include a timeline of meetings that took place and that are planned for the next months

• Specific comments:

• Split the neutron and Lambda final states into two slides - different detector requirements for each, KLambda is new for many people
• Beam energies: general concept is to take fixed luminosity and look what is doable at the extremes
• make clear that pi0 is not for meson SF studies but for systematic checks
• Note that for KLambda need to reconstruct the particle
• Include slide on Jupyter details in backup for reference
• Adjust crossing angle in the DEMP studies - make new plots

ACTION ITEMS

• Complete the slides for the EIC meeting and circulate

• Ask for a 5-min presentation on meson SF in the joint PWG+DWG session

• Figure out detection fraction for KLambda

• Continue work on analysis chain including KLambda

• Is there a meeting time that allows people from more time zones to participate?

NEXT MEETING: MONDAY MARCH 30 at 4:00PM (ET)

NEXT WORKING MEETING: MONDAY APRIL 13 (all day, remote meeting)