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A source of antihydrogen for in-flight hyperfine spectroscopy

Identification

Public canonical key

doi:10.1038/ncomms4089

Authors

N. Kuroda · S. Ulmer · Daniel J. Murtagh · S. Van Gorp · Y. Nagata · M. Diermaier · S. Federmann · Marco Leali · C. Malbrunot · V. Mascagna · O. Massiczek · Koji Michishio · Takehiro Mizutani · A. Mohri · Hiroki Nagahama · Miki Ohtsuka · B. Radics · Shota Sakurai · C. Sauerzopf · Ken Suzuki · M. Tajima · H. A. Torii · L. Venturelli · B. Wünschek · Johann Zmeskal · Nicola Zurlo · H. Higaki · Yasuyuki Kanai · Evandro Lodi Rizzini · Y. Nagashima · Y. Matsuda · E. Widmann · Y. Yamazaki

Reported year

2014

Reported language

en

Source type

article

First detected

2026-11-09T19:18:58.636117+00:00

Last metadata observation

2026-11-09T19:18:58.636117+00:00

Last HTTP verification

Not checked

Institutions reported by the source

Austrian Academy of Sciences · European Organization for Nuclear Research · Hiroshima University · Istituto Nazionale di Fisica Nucleare · RIKEN · Stefan Meyer Institute for Subatomic Physics · The University of Tokyo · Tokyo University of Science · University of Brescia

Documentary abstract — original language

Antihydrogen, a positron bound to an antiproton, is the simplest antiatom. Its counterpart—hydrogen—is one of the most precisely investigated and best understood systems in physics research. High-resolution comparisons of both systems provide sensitive tests of CPT symmetry, which is the most fundamental symmetry in the Standard Model of elementary particle physics. Any measured difference would point to CPT violation and thus to new physics. Here we report the development of an antihydrogen source using a cusp trap for in-flight spectroscopy. A total of 80 antihydrogen atoms are unambiguously detected 2.7 m downstream of the production region, where perturbing residual magnetic fields are small. This is a major step towards precision spectroscopy of the ground-state hyperfine splitting of antihydrogen using Rabi-like beam spectroscopy. Comparing hydrogen and antihydrogen—its antimatter counterpart—provides important tests of fundamental symmetries in the Standard Model. Kuroda et al. present a source of antihydrogen atoms that may provide high-precision in-flight measurements of their ground-state hyperfine splitting.

Identifiers

OPENALEX

W2082587899

DOI

10.1038/ncomms4089

Documentary context

Documentary family

Scholarship

Source-reported types

article

Entity mentions are not evidence of legal recognition. Jurisdiction studied is separate from author affiliation country.

Sources

OpenAlex · Record 1 · Record 2

• DOI · https://doi.org/10.1038/ncomms4089
• OpenAlex · https://openalex.org/W2082587899

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