Precision Spectroscopy of 2S-nS Transitions in Atomic Hydrogen: A Determination of the Proton Charge Radius
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866914516254588928 |
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| author | Bullis, R. G. Tavis, W. L. Weiss, M. R. Cisneros, J. Orellana Cheeseman, A. J. Jentschura, U. D. Yost, D. C. |
| author_facet | Bullis, R. G. Tavis, W. L. Weiss, M. R. Cisneros, J. Orellana Cheeseman, A. J. Jentschura, U. D. Yost, D. C. |
| contents | We present absolute frequency measurements of 2S_{1/2}-nS_{1/2} two-photon transitions with n = 8, 9, and 10 in a cryogenic beam of atomic hydrogen. Each transition has been measured with a fractional uncertainty of approximately 2.6*10^(-12). Combining the results from this work and the 1S_{1/2}-2S_{1/2} transition frequency, we extract a root-mean-square proton radius of r_p = 0.8433(31) fm and a Rydberg frequency of cR_{\infty} = 3,289,841,960,252.9(9.7) kHz. These are in good agreement with the CODATA 2022 recommended values. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_26401 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Precision Spectroscopy of 2S-nS Transitions in Atomic Hydrogen: A Determination of the Proton Charge Radius Bullis, R. G. Tavis, W. L. Weiss, M. R. Cisneros, J. Orellana Cheeseman, A. J. Jentschura, U. D. Yost, D. C. Atomic Physics High Energy Physics - Phenomenology We present absolute frequency measurements of 2S_{1/2}-nS_{1/2} two-photon transitions with n = 8, 9, and 10 in a cryogenic beam of atomic hydrogen. Each transition has been measured with a fractional uncertainty of approximately 2.6*10^(-12). Combining the results from this work and the 1S_{1/2}-2S_{1/2} transition frequency, we extract a root-mean-square proton radius of r_p = 0.8433(31) fm and a Rydberg frequency of cR_{\infty} = 3,289,841,960,252.9(9.7) kHz. These are in good agreement with the CODATA 2022 recommended values. |
| title | Precision Spectroscopy of 2S-nS Transitions in Atomic Hydrogen: A Determination of the Proton Charge Radius |
| topic | Atomic Physics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2604.26401 |