Fifth-force search with the bound-electron g factor

Debierre, Vincent; Keitel, Christoph H.; Harman, Z.

doi:10.1016/j.physletb.2020.135527

Cited by 33 publications

(32 citation statements)

References 62 publications

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“…For the ground 1s state of all the considered ions, we conclude that the effect is insignificant at cryogenic and room temperatures at the current level of experimental accuracy. However, it is important to consider within the framework of such demanding scenarios as search for new physics [61], in assumption that the required experimental progress is possible.…”

Section: Resultsmentioning

confidence: 99%

Thermal corrections to the bound-electron $g$-factor

Zalialiutdinov,

Glazov,

Solovyev

2021

Preprint

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The influence of the blackbody radiation field on the g-factor of light hydrogenlike ions is considered within the framework of quantum electrodynamics at finite temperature for bound states. One-loop thermal corrections are examined for a wide range of temperatures. The numerical results for 1s, 2s, 2p 1/2 , and 2p 3/2 states are presented. It is shown that for excited states finite temperature corrections to the bound-electron g-factor are close to the level of current experimental uncertainty even at room temperatures and can be discerned within the measurements anticipated in the near future.

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Section: Resultsmentioning

confidence: 99%

Thermal corrections to the bound-electron $g$-factor

Zalialiutdinov,

Glazov,

Solovyev

2021

Preprint

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“…Combined with dedicated theoretical calculations, these measurements provided the determination of the electron mass [6] and one of the best tests of the bound-state quantum electrodynamics (QED) [7]. Extension of these tests towards heavier ions are anticipated in the future [8], which might open new ways for determination of the fine-structure constant α [9,10] and searches for physics beyond the Standard Model [11].…”

Section: Introductionmentioning

confidence: 99%

Two-photon exchange corrections to the $g$ factor of Li-like ions

Yerokhin,

Keitel,

Harman

2021

Preprint

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We report calculations of QED corrections to the g factor of Li-like ions induced by the exchange of two virtual photons between the electrons. The calculations are performed within QED theory to all orders in the nuclear binding strength parameter Zα, where Z is the nuclear charge number and α is the fine-structure constant. In the region of low nuclear charges we compare results from three different methods: QED, relativistic many-body perturbation theory, and nonrelativistic QED. All three methods are shown to yield consistent results. With our calculations we improve the accuracy of the theoretical predictions of the g factor of the ground state of Li-like carbon and oxygen by about an order of magnitude. Our theoretical results agree with those from previous calculations but differ by 3-4 standard deviations from the experimental results available for silicon and calcium.

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“…Moreover, proposals have been put forward to use comparisons of measurements and calculations on g factors of highly-charged ions to obtain an improved determination of the fine-structure constant α of electrodynamics [12][13][14]. The high-precision regime in which both experimental and theoretical efforts operate also motivates proposals [15][16][17] to use highly charged ions to search for physics beyond the Standard Model (SM), also known simply as New Physics (NP). Indeed, NP would bring small contributions to precisely measured and calculated spectroscopic quantities [18,19], such as energy levels and g factors.…”

Section: Introductionmentioning

confidence: 99%

Radiative and photon-exchange corrections to New Physics contributions to energy levels in few-electron ions

Debierre,

Oreshkina

2021

Preprint

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The influence of hypothetical new interactions beyond the Standard Model on atomic spectra has attracted recent interest. In the present work, interelectronic photon-exchange corrections and radiative quantum electrodynamic corrections to the hypothetical contribution to the energy levels of few-electron ions from a new interaction are calculated. The 1s, 2s and 2p 1/2 ground states of H-like, Li-like and B-like ions are considered, as motivated by proposals to use isotope shift spectroscopy of few-electron ions in order to set stringent constraints on hypothetical new interactions. It is shown that, for light Li-like and B-like ions, photon-exchange corrections are comparable to or even larger, by up to several orders of magnitude, than the leading one-electron contribution from the new interaction, when the latter is mediated by heavy bosons.

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Fifth-force search with the bound-electron g factor

Cited by 33 publications

References 62 publications

Thermal corrections to the bound-electron $g$-factor

Thermal corrections to the bound-electron $g$-factor

Two-photon exchange corrections to the $g$ factor of Li-like ions

Radiative and photon-exchange corrections to New Physics contributions to energy levels in few-electron ions

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