Les Houches

(accessible to everyone, editing rights to conveners and organizers)

Jet substructure techniques:

• Interplay of jet substructure with other groups (e.g. jet substructure for EW measurements like VBF, semileptonic VV, etc.)
• Snowmass jet substructure report (JSS at future colliders) [work + discussion]
• What can we do with previous colliders, in light of the LHC [discussion]
• Comparing new unfolding methods
  • Accord on unbinned results (?)
• Probing the latest MC generators (PB algorithm, PANScales, Deductor…) with jet substructure
  • Finite N_C, beyond LL, …

Techniques and calculations for SM phenomenology:

` * Calculations:

• expected precision for fundamental Standard Model processes at 14 and 100 TeV; what calculations are needed to match this precision?
• 2→3 at NNLO; status/challenges/prospects
• theory uncertainties; more rigorous estimates? correlations?
• theoretically sound definition of FONLL at the differential level, beyond incl. cross sections?

• PDFs:
  • followup on PDF4LHC15 benchmarking exercise; better understanding of tolerances, tensions
  • EW corrections/EW PDFs; how to provide consistent calculations
  • small x resummation; what is HERA trying to tell us?
  • EIC; what will EIC tell us? how do we prepare for that?

• Higgs:
  • understanding the SM for high Higgs pT; role of top mass corrections/scheme (MSbar vs on-shell); improving channel sensitivities
  • polarisation measurements (for diboson/VBS as well)

• Top:
  • MSbar vs on-shell
  • ttW; tension; can new calculations resolve it?

• Monte Carlo:
  • improvements to ME+PS accuracy, both logarithmic and fixed order; benchmarking to understand the roles of each, testing of log-enhanced terms (using LEP data?); impact of power corrections, e.g. induced by recoil schemes
  • non-perturbative corrections; why are these uncertainties dominant in so many LHC analyses; can this situation be improved?
  • improving/extending NNLO+PS
  • review of EW parton showers/heavy gauge boson radiation, at LHC and 100 TeV; partial compensation of virtual EW Sudakov logs.

• Jets:
  • flavor tagging of jets; matching what theorists can predict (IR safety) and what experimentalists can measure