SnowmassExecutiveSummary
https://www.slac.stanford.edu/econf/C210711/Summary.html
- describes electroweak and strong interactions up to energies of a few hundred GeV with great accuracy.
- several fundamental questions unexplained such as the details of the evolution of the early universe, the origin of the matter-antimatter asymmetry of the universe, the nature of dark matter and dark energy, the origin of neutrino masses, the origin of the electroweak scale, and the origin of flavor dynamics.
- The EF supports a fast start for the construction of an e+e Higgs Factory (linear or circular), and a significant R&D program for multi-TeV colliders (hadron and muon).
- Finally, the U.S. EF community has expressed renewed interest and ambition to develop options for an energy-frontier collider that could be sited in the U.S., while maintaining its international collaborative partnerships and obligations with, for example, CERN.
- Finally, new machine-learning approaches are fundamentally changing the way we work.
- General Principles:
- Continue with the science identified in the previous Snowmass/P5
- The completion of existing experiments and the construction and operation of approved projects, including those prioritized by the 2014 P5 such as the HL-LHC, LBNF/DUNE,
- As existing approved construction projects come to a completion, a broad and complementary set of new projects should be considered a high priority to maintain the continuity of our investigations and opportunities for new discoveries.
- Both R&D directed to specific future projects and generic research should be supported in these critical enabling technologies, as well as in new areas such as quantum science and machine learning.
- cohesive and strategic approach to promote diversity, equity, and inclusion in high-energy physics
- The HEP community must engage with: academia, kindergarten-postdoctoral training, private industry, government policymakers, and the broader society. A structure for formulating a coordinated approach to achieve these goals should be created and provided with the resources needed for success.
From Joel Butlers summary: https://indico.cern.ch/event/1218225/contributions/5385268/attachments/2644882/4577858/Pheno_2023_%20Vision_JB_R4.pdf
- It is essential to Complete the LHC and HL-LHC program
Start now a targeted program for detector R&D for Higgs Factories ยง Support a fast start of the construction of a Higgs factory somewhere in the world