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Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen
,
W. Bertsche,
A. Capra ,
C. Carruth,
C. L. Cesar ,
Michael Charlton,
A. Christensen,
R. Collister,
April Cridland ,
Stefan Eriksson ,
A. Evans,
N. Evetts,
J. Fajans ,
T. Friesen,
M. C. Fujiwara,
D. R. Gill,
P. Grandemange ,
P. Granum ,
J. S. Hangst ,
W. N. Hardy,
M. E. Hayden,
D. Hodgkinson ,
E. Hunter ,
Aled Isaac ,
M. A. Johnson,
Jack Jones,
S. A. Jones ,
S. Jonsell ,
A. Khramov,
L. Kurchaninov,
Niels Madsen ,
Daniel Maxwell ,
J. T. K. McKenna,
S. Menary,
T. Momose,
Patrick Mullan,
J. J. Munich,
K. Olchanski,
A. Olin ,
JOANNA PESZKA,
A. Powell ,
P. Pusa,
C. Ø. Rasmussen ,
F. Robicheaux ,
R. L. Sacramento,
M. Sameed ,
E. Sarid,
D. M. Silveira,
C. So,
G. Stutter ,
T. D. Tharp,
R. I. Thompson,
Dirk van der Werf ,
J. S. Wurtele ,
Graham Shore
Nature Physics, Volume: 21, Issue: 2, Pages: 201 - 207
Swansea University Authors:
Christopher Baker , Michael Charlton, April Cridland , Stefan Eriksson , Aled Isaac , Jack Jones, Niels Madsen , Daniel Maxwell , Patrick Mullan, JOANNA PESZKA, Dirk van der Werf , Graham Shore
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DOI (Published version): 10.1038/s41567-024-02712-9
Abstract
The antimatter equivalent of atomic hydrogen—antihydrogen—is an outstanding testbed for precision studies of matter–antimatter symmetry. Here we report on the simultaneous observation of both accessible hyperfine components of the 1S–2S transition in trapped antihydrogen. We determine the 2S hyperfi...
| Published in: | Nature Physics |
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| ISSN: | 1745-2473 1745-2481 |
| Published: |
Springer Science and Business Media LLC
2025
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa68708 |
| Abstract: |
The antimatter equivalent of atomic hydrogen—antihydrogen—is an outstanding testbed for precision studies of matter–antimatter symmetry. Here we report on the simultaneous observation of both accessible hyperfine components of the 1S–2S transition in trapped antihydrogen. We determine the 2S hyperfine splitting in antihydrogen and—by comparing our results with those obtained in hydrogen—constrain the charge–parity–time-reversal symmetry-violating coefficients in the standard model extension framework. Our experimental protocol allows the characterization of the relevant spectral lines in 1 day, representing a 70-fold improvement in the data-taking rate. We show that the spectroscopy is applicable to laser-cooled antihydrogen with important implications for future tests of fundamental symmetries. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
This work was supported by the European Research Council through its Advanced Grant programme (JSH); CNPq, FAPERJ, RENAFAE (Brazil); NSERC, CFI, NRC/TRIUMF, EHPDS/EHDRS (Canada); FNU (NICE Centre), Carlsberg Foundation (Denmark); ISF (Israel); STFC, EPSRC, the Royal Society and the Leverhulme Trust (UK); DOE, NSF (USA); and VR (Sweden). |
| Issue: |
2 |
| Start Page: |
201 |
| End Page: |
207 |