The paper “Acceleration of Positive Muons by a Radio-Frequency Cavity” on muon acceleration research involving KEK has been selected for the “PRL Collection of the Year 2025” by Physical Review Letters (PRL).
The collection highlights papers selected by the PRL editors as representative achievements of the year from among approximately 2,500 papers published annually in the journal. Only about 2% of PRL papers are included in the collection.
PRL Collection of the Year 2025
“Acceleration of Positive Muons by a Radio-Frequency Cavity”
The paper, published in PRL in June 2025, reported the world’s first successful cooling of positively charged muons to near room-temperature energy (0.03 eV) and subsequently accelerating them using radio-frequency acceleration up to 100 keV. Muons are elementary particles with a mass about 200 times greater than that of electrons and are expected to have a wide range of applications in particle physics, material science, and other fields. This achievement was recognized as an important step toward realizing next-generation muon accelerators.
This research publication: Acceleration of Positive Muons by a Radio-Frequency Cavity
Phys. Rev. Lett. 134, 245001
For more details, please see the press release below.
World’s first cooling and acceleration of muon