Dependence of atomic parity-violation effects on neutron skins and new physics

Viatkina, A. V.; Antypas, Dionysios; Kozlov, M. G.; Budker, Dmitry; Flambaum, V. V.

doi:10.1103/physrevc.100.034318

Cited by 21 publications

(18 citation statements)

References 29 publications

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“…The unique feature of this facility is that the Doppler tuning of the photon energy enables direct access 102 175.10 (53) theo [92] 238 U 90+ 1s2p 1 P 1 -1s 2 1 S 0 100 626. (35.) exp [94] 100 610.89 (65) theo [95] 100 610.68 (54) theo [96] to the bound-state ionic transitions in the X-Ray domain. To emphasize this feature, let us first briefly summarize what is presently known about the spectra of high-Z partially stripped ions.…”

Section: Spectroscopy Of Partially Stripped Ionsmentioning

confidence: 99%

“…Conversely, better knowledge of neutron skins should enable more precise APV experiments because the neutron-skin effect ultimately limits the extraction of new physics from APV. [61][62][63] Knowing the neutron skin in Pb fixes nuclear-model parameters [62] and thus this will have an important impact on constraining neutron-skin uncertainties in interpreting experiments with neutral atoms such as Cs, Yb, Dy, Rb, and Fr, [64,65] singly ionized ions, and diatomic molecules where APV measurements are planned or ongoing.…”

Section: Extracting Neutron Skin From the Measurement Of Parity Violamentioning

confidence: 99%

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Atomic Physics Studies at the Gamma Factory at CERN

et al. 2020

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The Gamma Factory initiative proposes to develop novel research tools at CERN by producing, accelerating, and storing highly relativistic, partially stripped ion beams in the SPS and LHC storage rings. By exciting the electronic degrees of freedom of the stored ions with lasers, high-energy narrow-band photon beams will be produced by properly collimating the secondary radiation that is peaked in the direction of ions' propagation. Their intensities, up to 10 17 photons per second, will be several orders of magnitude higher than those of the presently operating light sources in the particularly interesting-ray energy domain reaching up to 400 MeV. This article reviews opportunities that may be afforded by utilizing the primary beams for spectroscopy of partially stripped ions circulating in the storage ring, as well as the atomic-physics opportunities made possible by the use of the secondary high-energy photon beams. The Gamma Factory will enable groundbreaking experiments in spectroscopy and novel ways of testing fundamental symmetries of nature.

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Section: Spectroscopy Of Partially Stripped Ionsmentioning

confidence: 99%

Section: Extracting Neutron Skin From the Measurement Of Parity Violamentioning

confidence: 99%

Atomic Physics Studies at the Gamma Factory at CERN

et al. 2020

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“…Hence measurements of PV effects in partially stripped ions could provide an invaluable source of information on neutron skins, especially given the simplicity of atomic structure calculations. [ 32 ]…”

Section: Discussionmentioning

confidence: 99%

Parity‐Violation Studies with Partially Stripped Ions

et al. 2022

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A theoretical study of photoexcitation of highly charged ions from their ground states, a process which can be realized at the Gamma Factory at CERN, is presented. Special attention is paid to the question of how the excitation rates are affected by the mixing of opposite‐parity ionic levels, which is induced both by an external electric field and the weak interaction between electrons and the nucleus. In order to reinvestigate this “Stark‐plus‐weak‐interaction” mixing, well‐known in neutral atomic systems, we employ relativistic Dirac theory. Based on the developed approach, detailed calculations are performed for the 1s1/2→$_{1/2} \rightarrow$ 2s1/2 and 1normals20.28em2normals1/2→1normals20.28em3normals1/2${\rm 1s}^2 \; {\rm 2s}_{1/2} \rightarrow {\rm 1s}^2 \; {\rm 3s}_{1/2}$ (M1 + parity–violating–E1) transitions in hydrogen‐ and lithium‐like ions, respectively. In particular, we focus on the difference between the excitation rates obtained for the right‐ and left‐circularly polarized incident light. This difference arises due to the parity violating mixing of ionic levels and is usually characterized in terms of the circular–dichroism parameter. We argue that future measurements of circular dichroism, performed with highly charged ions in the SPS or LHC rings, may provide valuable information on the electron–nucleus weak–interaction coupling.

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“…Additional ways to access neutron skins include measuring PV in atoms, [ 313 ] and coherent π 0 photoproduction that was used by the A2 collaboration at Mainz to investigate neutron skin of 208 Pb using photons in the energy range of 180 to 240 MeV. [ 314 ]…”

Section: Nuclear Physics With Gf Secondary‐photon Beam On Fixed Targetsmentioning

confidence: 99%

Expanding Nuclear Physics Horizons with the Gamma Factory

et al. 2022

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The Gamma Factory (GF) is an ambitious proposal, currently explored within the CERN Physics Beyond Colliders program, for a source of photons with energies up to ≈400 MeV and photon fluxes (up to ≈1017 photons s−1) exceeding those of the currently available gamma sources by orders of magnitude. The high‐energy (secondary) photons are produced via resonant scattering of the primary laser photons by highly relativistic partially‐stripped ions circulating in the accelerator. The secondary photons are emitted in a narrow cone and the energy of the beam can be monochromatized, down to 10−3–10−6 level, via collimation, at the expense of the photon flux. This paper surveys the new opportunities that may be afforded by the GF in nuclear physics and related fields.

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Dependence of atomic parity-violation effects on neutron skins and new physics

Cited by 21 publications

References 29 publications

Atomic Physics Studies at the Gamma Factory at CERN

Atomic Physics Studies at the Gamma Factory at CERN

Parity‐Violation Studies with Partially Stripped Ions

Expanding Nuclear Physics Horizons with the Gamma Factory

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