General Meson SF Meeting Summary 11/9/22

PARTICIPANTS: Tobias, Carlos A. Dmitry R., Garth, Love, Muhammad, Patrick, Rachel, Richard, Stephen, Tanja, David

REVIEW GOALS 2022 - from January 2022 Meson SF meeting Link

• Overarching thought: emphasis on how QCD phenomenology and modeling, QCD continuum, LQCD and data all can work together to solve questions on meson structure

• Theory: short presentation on what measurements or kinematic regions of a measurement would be most valuable

• so far have covered the topics:

• Impact of lattice on global fitting (Patrick)
• Pion TMD, e.g., using low energy DY, can these low PT have impact on collinear pion PDF too, EIC - pT dependence of pion and/or kaon further discussions (Tobias)
• Pion GPD (Cedric and collaborators)

• not yet covered

• Kaon structure functions and form factor
• Statistical models for pion structure functions
• Mass sum rule of the pion

• Challenges of meson physics from lattice point of view

• Experimental activities

• ongoing

• Kaon Form Factor at EIC - feasibility studies (Love Preet, URegina)
• Pion Structure Functions model optimizations (Richard Trotta, CUA)
• Kaon Structure Functions model optimizations (Rachel Montgomery, Glasgow U.)

• superseded or not active at the moment
• Revisit simulation to guide the design - different interaction regions - need software to be ready
• Reconstruction setup in Geant4 simulations (John Arrington, Shujie Li, LBNL)
• Simulation software updates and in particular Fun4All (Bill Li, W&M)

DISCUSSION ABOUT LONG TERM GOALS 2023

• Theory

• Interesting focus: pion TMD
• Work on pion TMDs wrapping up on TMDs - then could consider kaon in Minkowski

• Experiment

• Design and simulation timleni fits - interesting: synergy between JLab energy upgrade and EIC
• there may also be some topics left to further quantity on second EIC detector complementarity

• Aim for meeting and/or paper

• timeframe 6-9 months

• Possible venue for meeting: pion TMD

• CFNS - Abhay
• SURA - W&M, CUA, URegina
• CNF - Latifa

• Action items:

• (DONE) post the 2022 goals
• (DONE) post the notes from this meeting with goal for 2023
• define a workshop topic and check possible venues and time frames

KAON FORM FACTOR AT EIC (Stephen)

• Pion generator in EIC simulation framework - expect events from simulation campaign soon

• Exclusive events from simulstion

• Kaon: npi0 channel in simulation

• Run pion 5 on 41 (limit Q2>5 limitation of generator - lose events)

• but still dominated by ratio and not statistics

• Action item: Discuss on Monday EPIC meeting about what Meson SF needs and challenges in simulation

NEXT MEETING: December 14th at 3pm ET