Friday Discussion

1) Pile-up
- light grooming for top mass measurement requires pile-up substraction
- interesting question is whether pile-up subtraction affects theory predictions
- best practice probably pile-up subtraction before unfolding without touching UE. Unfolded measurements shouls be detector-independent
- considering plotting groomed pT. Depends on the groomer. S-D pT ok for beta>0.
- pile-up in heavy ion complicated by absence of vertexing

2) Machine Learning
- consideration about IRC safety should still matter (should it?)
- training on real data rather than MC
- ML is part of the toolkit. How can we exploit it? Classify events in subclasses and then look at them with theory eyes

3) Other stuff:
- Does recuersive soft-drop exhibit better analytic behavior? It should. First calculaitons should come soon. Energy loss however remains challenging
- Open Data: now with detector simulations. Are these simulations actually enough? Does one really need the “data”?
- Report on the 2016 report: it should be circulated by the end of August (2017!)