Full-relativistic calculation of nuclear polarization in atomic and muonic levels

Haga, Akihiro; Horikawa, Yoko; Toki, H.; Tanaka, Y.

doi:10.1016/j.nimb.2005.03.148

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…The most notable theoretical efforts to explain these anomalies were performed in Refs. [9][10][11][12], where, unlike previous attempts, the transverse part of the electromagnetic muon-nucleus interaction was taken into account. While the longitudinal, or Coulomb, part always leads to |∆E NP 2p 3/2 | < |∆E NP 2p 1/2 | as expected, the transverse part was shown to give rise to an additional NP contribution with the opposite muon-spin dependency [9].…”

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confidence: 99%

“…A glimpse of a possible resolution to the ∆2p anomaly in µ- 208 Pb was later provided in Ref. [11] by treating the nucleus in the relativistic mean-field approximation. However, the authors themselves stressed the large uncertainties associated with the nuclear spectrum obtained in this way, and explaining the ∆3p splitting still remained a challenge.…”

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confidence: 99%

“…However, in the special case of NP, a possible non-negligible role of relativistic nuclear effects in heavy systems may still deserve further investigation, as proposed in Refs. [11,16].…”

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confidence: 99%

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Evidence against nuclear polarization as source of fine-structure anomalies in muonic atoms

Valuev,

Colò,

Roca-Maza

et al. 2022

Preprint

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A long-standing problem of fine-structure anomalies in muonic atoms is revisited by considering the ∆2p splitting in muonic 90 Zr, 120 Sn and 208 Pb and the ∆3p splitting in muonic 208 Pb. State-ofthe-art techniques from both nuclear and atomic physics are brought together in order to perform the most comprehensive to date calculations of nuclear-polarization energy shifts. Barring the more subtle case of µ-208 Pb, the results suggest that the dominant calculation uncertainty is much smaller than the persisting discrepancies between theory and experiment. We conclude that the resolution to the anomalies is likely to be rooted in refined QED corrections or even some other previously unaccounted-for contributions.

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confidence: 99%

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confidence: 99%

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Evidence against nuclear polarization as source of fine-structure anomalies in muonic atoms

Valuev,

Colò,

Roca-Maza

et al. 2022

Preprint

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Revisiting the extraction of charge radii of 40Ca and 208Pb with muonic atom spectroscopy

Xie,

Naito,

et al. 2023

Physics Letters B

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Stringent test of QED with hydrogen-like tin

Morgner,

Tu,

König

et al. 2023

Nature

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Inner-shell electrons naturally sense the electric field close to the nucleus, which can reach extreme values beyond 1015 V cm−1 for the innermost electrons1. Especially in few-electron, highly charged ions, the interaction with the electromagnetic fields can be accurately calculated within quantum electrodynamics (QED), rendering these ions good candidates to test the validity of QED in strong fields. Consequently, their Lamb shifts were intensively studied in the past several decades2,3. Another approach is the measurement of gyromagnetic factors (g factors) in highly charged ions4–7. However, so far, either experimental accuracy or small field strength in low-Z ions5,6 limited the stringency of these QED tests. Here we report on our high-precision, high-field test of QED in hydrogen-like 118Sn49+. The highly charged ions were produced with the Heidelberg electron beam ion trap (EBIT)8 and injected into the ALPHATRAP Penning-trap setup9, in which the bound-electron g factor was measured with a precision of 0.5 parts per billion (ppb). For comparison, we present state-of-the-art theory calculations, which together test the underlying QED to about 0.012%, yielding a stringent test in the strong-field regime. With this measurement, we challenge the best tests by means of the Lamb shift and, with anticipated advances in the g-factor theory, surpass them by more than an order of magnitude.

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Full-relativistic calculation of nuclear polarization in atomic and muonic levels

Cited by 4 publications

References 10 publications

Evidence against nuclear polarization as source of fine-structure anomalies in muonic atoms

Evidence against nuclear polarization as source of fine-structure anomalies in muonic atoms

Revisiting the extraction of charge radii of 40Ca and 208Pb with muonic atom spectroscopy

Stringent test of QED with hydrogen-like tin

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