Members of the particle physics community at the Fermilab Town Hall, March 2023. Photo: Ryan Postel, Fermilab

Numerous Labs Shaped the 2023 Particle Physics Project Prioritization Panel (P5) Report

The 2023 Particle Physics Project Prioritization Panel (P5) was charged with developing a 10-year strategic plan for US particle physics, in the context of a 20-year global strategy and two constrained budget scenarios. An essential source of input was the 2021 Snowmass Community Planning Exercise organized by the Division of Particles and Fields of the American Physical Society. The panel received additional input from several channels, including town hall meetings, laboratory visits, and individual communications. Lawrence Berkeley National Laboratory, Fermilab, Argonne National Laboratory, Brookhaven National Laboratory & SLAC hosted town halls.  Read the overview from Brookhaven Lab>>>

This report outlines an ambitious program balanced across science drivers. A mix of large-, medium- and small-scale experiments ensures a continuous stream of groundbreaking research with exceptional discovery potential. The time-sequenced plan is summarized in Figure 1. We recommend continuing specific projects, strategically advancing some to the construction phase, and delaying others. Where necessary, individual phases or elements of a large-scale project are prioritized separately.

Particle physics studies the smallest constituents of our vast and complex universe. At such small scales, the fundamental principles of quantum physics prevail. Remarkably, the entire observable universe, now billions of light years across, was once small enough to be quantum in nature. Its quantum history is imprinted on its large-scale structure. Read the Report’s Executive Summary.

The panel’s report identified three science themes, each with two science drivers:

  • Decipher the Quantum Realm: Elucidate the Mysteries of Neutrinos and Reveal the Secrets of the Higgs Boson
  • Explore New Paradigms in Physics: Search for Direct Evidence of New Particles and Pursue Quantum Imprints of New Phenomena
  • Illuminate the Hidden Universe: Determine the Nature of Dark Matter and Understand What Drives Cosmic Evolution

“Brookhaven Lab is involved in all six of these science drivers,” Deputy Associate Laboratory Director for High Energy Physics Dmitri Denisov said during a presentation at Brookhaven about the report’s rollout on Dec. 15. Denisov said there is strong support in the P5 report for Brookhaven’s ongoing high energy physics program and expertise in other areas the Lab is already actively involved in, including theory, detectors, and accelerator research and development. These projects cover recommendations in the 2023 report, which also emphasizes continued implementation of the P5 recommendations previously delivered in 2014.

“Brookhaven Lab is deeply involved in many activities that are recommended to move forward in the report, and there’s excellent potential for leadership and participation in new programs and experiments that P5 supports,” Denisov said. “That puts us in a very strong position.”

Read more from Brookhaven Lab. 

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