General Meson SF Meeting Summary 6/19/23

PARTICIPANTS: Rachel Montgomery, Parada Hutauruk, Stephen Kay, Rolf, Ent, Richard, Trotta, Tanja Horn

CALCULATIONS of PDFs, GPDs, etc. - next, include momentum dependence towards TMDs (Parada)

• more detail next time

EXPERIMENT DEVELOPMENTS (Rachel)

• Kaon SF event generator

• ongoing activity
• updated kaon splitting function in collaboration with Patrick B.

• TDIS at JLab 22 GeV

• increase in phase space for JLab TDIS and potential for meson PDF studies
• possible SIDIS pion and TMD extractions - background pions look separable from SIDIS pions for TMD studies

• pions usally go along q-vector - between 5deg and 30deg at 11 GeV corresponding to pT < 1 GeV

• make phase phase x vs Q2 - see D. Gaskell talk from Winter meeting 2023 (p.18) for guidance; probably want points on vertical in light blue region

• fix Q2 - Q2/x = constant driven by beam energy, e.g., x=0.2 then Q2 ~2 Gev2

• Action item: calculate geometric acceptance for pions in lab space - where do pions go and to determine if pions make it out of bore of magnet

• Action item: meeting in week of 26 June - goal: picking kinematics for possible TDIS pion measurement at 22 GeV

NEXT MEETING: THUR 20 JULY AT 9AM ET