12-13 October 2015
Europe/Zurich timezone

The workshop is part of the FCC-ee "QCD & gamma-gamma physics" working group activities (aiming at a Yellow Report in 2016), and aims at addressing the following issues:

  • What is the current state-of-the-art of all alpha_s determination methods from the theoretical & experimental point of view ?
  • What is the current size of the theoretical uncertainties: missing higher orders, electroweak corrections, power corrections, hadronization corrections,... ?
  • What is the expected alpha_s uncertainty in ~10 years from now: theoretical developments, plus O(1 ab-1) p-p at 14 TeV at the LHC ?
  • What are the expected improvements brought about by the FCC-ee: 1012 Z's at sqrt(s)=mZ; 108 W's at sqrt(s)=mWW; similar orders-of-magnitude for tau, jets,...? What are the systematic errors that the FCC-ee detectors should target in order to match the expected statistical precision, or where that is not possible, what are the important theoretical targets that should be met or exceeded?

Proceedings of the workshop: http://arxiv.org/abs/1512.05194

Articles summarizing the workshop:

CERN PH Newsletter (Nov. 2015): http://ph-news.web.cern.ch/content/measuring-strong-coupling-constant-lhc-fcc-ee

CERN Courier (Dec. 2015 Issue): http://cerncourier.com/cws/article/cern/63159/2