• co-Conveners: Michael Begel, Stefan Hoeche, Michael Schmitt
• Email list: SNOWMASS-EF-05-PRECISION_QCD@FNAL.GOV
  • For instructions how to join an Email list refer to Energy Frontier/Communications

This topical group covers the following: physics with jet and jet substructure, calculations of higher-order effects and their impact on precision QCD physics, measurements of the strong coupling constant and its running, measurements of quark masses, PDF fits and PDF-sensitive measurements, W/Z(+jets) boson production, and techniques to improve accuracy of future MC event generators.

There is a tight synergy with other groups, including EF06 and EF07.

If you have a topic you feel would be of interest to the group, please contact the conveners: s-hoeche@fnal.gov begel@bnl.gov m-schmitt@northwestern.edu.

Our meetings general take place on Mondays. Recent meetings include:

• May 18, 2020: Kick-off
• June 1, 2020: Orientation: past and recent work.
• June 30, 2020: alpha_S
• July 17, 2020: MC event generator uncertainties
• Aug 3-4, 2020: Mini-workshop on non-perturbative uncertainties

Some (but not all) of the topics addressed by EF05:

• Measurements of alpha__S
• Parton Distribution Functions (together with E06)
• Connections between the High-Luminosity LHC and e.g. the Electron-Ion Collider (EIC) (together with EF07)
• Jet substructure
• Theoretical calculations: fixed-order pQCD
• Theoretical calculations: resummation
• Non-perturbative aspects
• MC Event Generators

Other topics include Lattice QCD, Connections to machine learning, jets and nuclear effects in lepton-ion scattering, precision calculations at small x_Bj, Regge trajectories, etc.

The plan for generating and organizing Monte Carlo event samples comes from the Monte Carlo Task Force led by John Stupak.

Researchers with interests in precision QCD should contact the organizers to arrange a presentation or contribution.

Activities will be grouped around several Letters of Interest. The portal for submitting an LOI is here.