The US ATLAS Hadronic Final State Forum workshop series provides a forum for in-depth discussion of current topics in hadronic final state physics and is open to all ATLAS collaborators. The Joint Theory & Experiment Open Session provides an opportunity hear about the latest topics in hadronic final state physics from both the theory community and our LHC colleagues.

ATLAS Workshop participants are encouraged to join one of several workshop projects and to use datasets and sample analysis code provided specifically for this purpose to study various aspects of hadronic final state issues. These projects have historically been continued with great success within the ATLAS Physics and Performance Working Groups.

This year's program concentrate on tagging techniques for hadronic final states. Among the topics of interest for the workshop and open session are:

• Heavy-flavor tagging
• Multi-b final states
• Quark-vs-gluon discrimination
• Top and W tagging algorithms
• ISR tagging
• Color-flow

The meeting structure will follow that of previous years:

• Monday, December 3rd - Joint Theory & Experiment Open Session
  • Located at the University of Chicago Gleacher Center in downtown Chicago
  • Highlights from current theoretical work in this broad area
  • Recent results from the experimental community.

• Tuesday - Friday, December 4th-7th - ATLAS Workshop Sessions
  • Located on the University campus
  • Short introductory talks related to the primary topics of the workshop
  • Significant time allotted for discussion and working group efforts
  • Breakout sessions with dedicated to working time,
  • Summary talks of progress achieved during the workshop will take place on Friday.