P5 Process

P5 Process

P5 (Particle Physics Project Prioritization Panel) reports to HEPAP (High Energy Physics Advisory Panel) that advises High Energy Physics of DOE Office of Science and Division of Physics of NSF. We will build on the “Snowmass” community study to hash out priorities for the next 10 years within 20-year context.


The charge to P5 was issued by Dr. Asmeret Asefaw Berhe, Director of Office of Science, Department of Energy, and Dr. Sean L. Jones, Assistant Director, Directorate for Mathematical and Physical Sciences, National Science Foundation, to the HEPAP chair JoAnne Hewett on November 2, 2022. The P5 report is expected to be released in October 2023.


P5 is chaired by Hitoshi Muryama and deputy chair Karsten Heeger.

P5 News

Town Halls

We will have four town hall meetings in hybrid mode with people in the community to give short presentations on issues, visions, science, projects of interest to the field, including an open-mic session. If people want to speak privately with the panel, we will try to accommodate the request as much as we can, especially for early career scientists. They are not tied to any specific Snowmass frontiers.

In addition, we will have a set of invited talks at the meetings cenetered around some of the Snowmass frontiers, on the visions of the communities and specific set of projects. This is an important part of the information gathering mode for the panel.

Hybrid Town Halls

We also held a session “Discussion with P5” at the APS April Meeting on Saturday, April 15, 2023.

Virtual Town Halls

Closed Meetings

Over the coming months there will be a series of closed meetings for the P5 panel.

Project Information

In addition to the town halls, the P5 panel will request information on cost, schedule, risks and science goals from projects. P5 chair Murayama has charged a separate sub-panel chaired by Jay Marx to evaluate cost, schedule, and risks. The request for information will be sent out during the week of April 10, 2023 starting with the largest projects in the field.

2023 P5 Presentations