1. A. Afanasev/H.Avakian
Precision RC, JLab, May 19

2. x-sections change rapidly
Elouadrhiri
Bressan
Precision RC, JLab, May 19

3. x-sections have a number of azimuthal moments
radiatiation may generate new moments and mix existing ones
Akushevich
Precision RC, JLab, May 19

4. EIC Need radiative corrections over a wide range in kinematics
E.C. Aschenauer
Need radiative corrections over a wide range in kinematics
for a wide range of (un)polarised observables in ep / eA
Precision RC, JLab, May 19

5. Need a realistic MC
Diefenthaler
Precision RC, JLab, May 19

6. Analysis of azimuthal moments in SIDIS/HEP
Data (contains N events with 4 vectors of reconstructed particles, N~1B)
MC with RC (contains M events with 4 vectors of generated and reconstructed particles, M~5-10N)
acceptance
Microscopic bins (counts in l,L,x,y,[z,PT][t], f) defining detector acceptance, efficiency and material on path of leptons
Define x-sections/normalized counts
Counts in microscopic bins in l,L,x,y, [z,PT][t],f, corrected for detector acceptance and efficiency
GPD/TMD extraction framework
Fundamentals
SFs, evolution
Perform radiative corrections and fits
GPD/TMD extraction
Multiplicities and azimuthal moments in macroscopic bins in x,y, [z,PT][t], corrected for Radiative Corrections
GPD/TMD library
Precision RC, JLab, May 19

7. Analysis of azimuthal moments in SIDIS/HEP
MC +RC (contains M events with 4 vectors of generated and reconstructed particles, M~ N)
Data (contains N events with 4 vectors of reconstructed particles, N~1B)
acceptance
Elementary bins (counts in l,L,x,y,[z,PT][t], f) defining detector acceptance, efficiency and material on path of leptons
Define x-sections/normalized counts
Counts in elementary bins in l,L,x,y, [z,PT][t],f, corrected for detector acceptance and efficiency
GPD/TMD extraction framework
Fundamentals
SFs, evolution,RC
Pros:
Only pure (no theory based assumptions) experimental data will serve as input for extraction framework
Elementary (limited by resolution) bins would allow also “event based” analysis (unbinned, Bessel,…)
Cons:
Require times more computing power
GPD/TMD extraction
GPD/TMD library
Precision RC, JLab, May 19

8. Extraction and validation of 3D PDFs
ThePEG framework, HERWIG++,PYTHIA
TMDlib and TMDplotter version 1.0.0”
Hautman et al Preprint
SIDIS,DY,e+/e-)
experiments
Hard Scattering MC+RC
QCD fundamentals
RC/unfolding
SFs
PDF and FF Library
(models,parametrizations)
Hard Scattering Data Counts
(x-sections, multiplicities,….)
3D analysis framework,
phenomenology
Soffer/Zavada/Roberts/Matevosyan/Melnitchouk/
Develop reliable and model independent techniques for the extraction of 3D PDFs and fragmentation functions from the multidimensional experimental observables.
Anselmino et al, arXiv:
Observables which are constructed by taking ratios are not ideal grounds for the study of TMD evolution effects. More effort should be made towards measuring properly normalized SIDIS and e+e-, and Drell-Yan cross sections (both unpolarised and polarised)
Precision RC, JLab, May 19

9. SUMMARY
Electromagnetic corrections are crucial for interpretation of electroproduction data.
Extension and further development of the theoretical and computational approaches to higher-order QED effects for electron scattering is an outstanding problem for the upcoming physics analysis effort at JLab/EIC/....
Need a full set of SFs for consistent applications of RC
Need a self consistent procedure integrating radiative corrections in the extraction of 3D PDFs, GPDs and form factors in nucleons and nuclei.
Precision RC, JLab, May 19