MCFP Workshop on Lattice Parton Physics
Maryland Center for Fundamental Physics (MCFP)
University of Maryland
College Park, MD
April 6-8, 2018
Taku Izubuchi (BNL)
Karl Jansen (DESY)
Xiangdong Ji (University of Maryland/TD Lee Institute, Shanghai)
Jianwei Qiu (JLab)
Feng Yuan (LBNL)
Understanding the internal structure of the nucleon and nuclei in QCD is of
fundamental importance in sub-atomic physics. A major focus of research on
this topic is the partonic structure of the nucleon, including its spin structure.
There have been great advancements and breakthroughs through the fruitful
investigations in the last few decades. Great opportunities in the near future
with continuing projects from polarized proton collisions at RHIC, Brookhaven
National Lab, the 12 GeV upgrade at Jefferson Lab, and the planed electron-ion
collider (EIC) will undoubtedly deepen our understanding of the fundamental
questions associated with nucleon structure. In particular, the EIC will provide
unprecedented precision in exploring many of the outstanding questions.
In line with these experiment upgrades and future plans, we envision that the
theory developments should be advanced as well. Among them, lattice QCD,
which provides first principle QCD computations, becomes the most prominent tool.
In particular, it has provided more and more important insights in our understanding
of partonic structure of the nucleon. This is not only because the computer power
available became stronger, but also because the novel computational techniques
in the form of the development of nowadays most efficient algorithms has
significantly advanced lattice QCD calculations. More importantly, new ideas
have also emerged in recent years to undertake the difficult task to solve the
non-perturbative problems associated with the parton distributions.
Of course, challenges are still ahead. In particular, although there have been
strong efforts in the lattice community to study parton physics, we need more
collaboration and dedicated efforts in performing the computations. We believe
it is the right time to bring together experts working in lattice QCD and phenomenologists
working in hadron structure to discuss the relevant open questions. Through detailed
discussions, we shall be able to identify the most important questions in parton physics
which can be rigorously addressed by lattice QCD, and set a prioritized working list
for the relevant physics topics. All these activities are in coordinating with the on-going
efforts from the hadron physics community with the existing experiments upgrades
and future plans.
We intend to have a small group of experts working on QCD, to discuss the
current status of the theoretical developments, and future perspectives. The
meeting will be organized in a very informal way, mainly focusing on the
exchange of ideas. Other interesting topics will also be covered to encourage
new ideas and collaborations.