Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen

C. J. Baker; W. Bertsche; A. Capra; C. Carruth; C. L. Cesar; M. Charlton; A. Christensen; R. Collister; A. Cridland Mathad; S. 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; C. A. Isaac; M. A. Johnson; J. M. Jones; S. A. Jones; S. Jonsell; A. Khramov; L. Kurchaninov; N. Madsen; D. Maxwell; J. T.K. McKenna; S. Menary; T. Momose; P. S. Mullan; J. J. Munich; K. Olchanski; A. Olin; J. Peszka; A. Powell; P. Pusa; C. Rasmussen; F. Robicheaux; R. L. Sacramento; M. Sameed; E. Sarid; D. M. Silveira; C. So; G. Stutter; T. D. Tharp; R. I. Thompson; D. P. van der Werf; J. S. Wurtele; G. M. Shore

doi:10.1038/s41567-024-02712-9

Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen

C. J. Baker, W. Bertsche, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, A. Christensen, R. Collister, A. Cridland Mathad, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Grandemange, P. Granum, J. S. Hangst, W. N. HardyM. E. Hayden, D. Hodgkinson, E. Hunter, C. A. Isaac, M. A. Johnson, J. M. Jones, S. A. Jones, S. Jonsell, A. Khramov, L. Kurchaninov, N. Madsen, D. Maxwell, J. T.K. McKenna, S. Menary, T. Momose, P. S. Mullan, J. J. Munich, K. Olchanski, A. Olin, J. Peszka, A. Powell, P. Pusa, C. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, G. Stutter, T. D. Tharp, R. I. Thompson, D. P. van der Werf, J. S. Wurtele, G. M. Shore

Department of Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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.

Original language	English
Article number	681
Journal	Nature Physics
DOIs	https://doi.org/10.1038/s41567-024-02712-9
State	Accepted/In press - 1 Jan 2025

ASJC Scopus subject areas

General Physics and Astronomy

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10.1038/s41567-024-02712-9

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Baker, C. J., Bertsche, W., Capra, A., Carruth, C., Cesar, C. L., Charlton, M., Christensen, A., Collister, R., Cridland Mathad, A., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M. C., Gill, D. R., Grandemange, P., Granum, P., Hangst, J. S., ... Shore, G. M. (Accepted/In press). Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen. Nature Physics, Article 681. https://doi.org/10.1038/s41567-024-02712-9

@article{d7c4ac76e37e461ca86890d8b8740e53,

title = "Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen",

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.",

author = "Baker, {C. J.} and W. Bertsche and A. Capra and C. Carruth and Cesar, {C. L.} and M. Charlton and A. Christensen and R. Collister and {Cridland Mathad}, A. and S. Eriksson and A. Evans and N. Evetts and J. Fajans and T. Friesen and Fujiwara, {M. C.} and Gill, {D. R.} and P. Grandemange and P. Granum and Hangst, {J. S.} and Hardy, {W. N.} and Hayden, {M. E.} and D. Hodgkinson and E. Hunter and Isaac, {C. A.} and Johnson, {M. A.} and Jones, {J. M.} and Jones, {S. A.} and S. Jonsell and A. Khramov and L. Kurchaninov and N. Madsen and D. Maxwell and McKenna, {J. T.K.} and S. Menary and T. Momose and Mullan, {P. S.} and Munich, {J. J.} and K. Olchanski and A. Olin and J. Peszka and A. Powell and P. Pusa and C. Rasmussen and F. Robicheaux and Sacramento, {R. L.} and M. Sameed and E. Sarid and Silveira, {D. M.} and C. So and G. Stutter and Tharp, {T. D.} and Thompson, {R. I.} and {van der Werf}, {D. P.} and Wurtele, {J. S.} and Shore, {G. M.}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",

year = "2025",

month = jan,

day = "1",

doi = "10.1038/s41567-024-02712-9",

language = "English",

journal = "Nature Physics",

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Baker, CJ, Bertsche, W, Capra, A, Carruth, C, Cesar, CL, Charlton, M, Christensen, A, Collister, R, Cridland Mathad, A, Eriksson, S, Evans, A, Evetts, N, Fajans, J, Friesen, T, Fujiwara, MC, Gill, DR, Grandemange, P, Granum, P, Hangst, JS, Hardy, WN, Hayden, ME, Hodgkinson, D, Hunter, E, Isaac, CA, Johnson, MA, Jones, JM, Jones, SA, Jonsell, S, Khramov, A, Kurchaninov, L, Madsen, N, Maxwell, D, McKenna, JTK, Menary, S, Momose, T, Mullan, PS, Munich, JJ, Olchanski, K, Olin, A, Peszka, J, Powell, A, Pusa, P, Rasmussen, C, Robicheaux, F, Sacramento, RL, Sameed, M, Sarid, E, Silveira, DM, So, C, Stutter, G, Tharp, TD, Thompson, RI, van der Werf, DP, Wurtele, JS & Shore, GM 2025, 'Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen', Nature Physics. https://doi.org/10.1038/s41567-024-02712-9

TY - JOUR

T1 - Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen

AU - Baker, C. J.

AU - Bertsche, W.

AU - Capra, A.

AU - Carruth, C.

AU - Cesar, C. L.

AU - Charlton, M.

AU - Christensen, A.

AU - Collister, R.

AU - Cridland Mathad, A.

AU - Eriksson, S.

AU - Evans, A.

AU - Evetts, N.

AU - Fajans, J.

AU - Friesen, T.

AU - Fujiwara, M. C.

AU - Gill, D. R.

AU - Grandemange, P.

AU - Granum, P.

AU - Hangst, J. S.

AU - Hardy, W. N.

AU - Hayden, M. E.

AU - Hodgkinson, D.

AU - Hunter, E.

AU - Isaac, C. A.

AU - Johnson, M. A.

AU - Jones, J. M.

AU - Jones, S. A.

AU - Jonsell, S.

AU - Khramov, A.

AU - Kurchaninov, L.

AU - Madsen, N.

AU - Maxwell, D.

AU - McKenna, J. T.K.

AU - Menary, S.

AU - Momose, T.

AU - Mullan, P. S.

AU - Munich, J. J.

AU - Olchanski, K.

AU - Olin, A.

AU - Peszka, J.

AU - Powell, A.

AU - Pusa, P.

AU - Rasmussen, C.

AU - Robicheaux, F.

AU - Sacramento, R. L.

AU - Sameed, M.

AU - Sarid, E.

AU - Silveira, D. M.

AU - So, C.

AU - Stutter, G.

AU - Tharp, T. D.

AU - Thompson, R. I.

AU - van der Werf, D. P.

AU - Wurtele, J. S.

AU - Shore, G. M.

PY - 2025/1/1

Y1 - 2025/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85215379931&partnerID=8YFLogxK

U2 - 10.1038/s41567-024-02712-9

DO - 10.1038/s41567-024-02712-9

M3 - Article

AN - SCOPUS:85215379931

SN - 1745-2473

JO - Nature Physics

JF - Nature Physics

M1 - 681

ER -

Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen

Abstract

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