Improved Isotope-Shift-Based Bounds on Bosons beyond the Standard Model through Measurements of the 
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Solaro, Cyrille; Meyer, S.; Fisher, Karin; Berengut, J. C.; Fuchs, Elina; Drewsen, Michael

doi:10.1103/physrevlett.125.123003

Cited by 69 publications

(41 citation statements)

References 56 publications

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“…The effect of the interactions would be detected as a deviation from the expected linearity in the so called King plots, that is, in the plot of the measured isotope shifts for one transitions vs the shift for the other. Recent results of experiments were reported in [327,328]. In [328], the isotope shifts for the 3d 2 D 3/2 -3d 2 D 5/2 fine structure transition was measured for the five stable zero-spin isotopes of Ca + and combined with measured isotope shifts for the 4s 2 S 1/2 -3d 2 D 5/2 transition.…”

Section: Search For Dark Mattermentioning

confidence: 99%

“…Recent results of experiments were reported in [327,328]. In [328], the isotope shifts for the 3d 2 D 3/2 -3d 2 D 5/2 fine structure transition was measured for the five stable zero-spin isotopes of Ca + and combined with measured isotope shifts for the 4s 2 S 1/2 -3d 2 D 5/2 transition. No nonlinearity was found in the King plots within the experimental uncertainties.…”

Section: Search For Dark Mattermentioning

confidence: 99%

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Testing gravity with cold atom interferometry: results and prospects

Tino

2021

Quantum Sci. Technol.

112

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Atom interferometers have been developed in the last three decades as new powerful tools to investigate gravity. They were used for measuring the gravity acceleration, the gravity gradient, and the gravity-field curvature, for the determination of the gravitational constant, for the investigation of gravity at microscopic distances, to test the equivalence principle of general relativity and the theories of modified gravity, to probe the interplay between gravitational and quantum physics and to test quantum gravity models, to search for dark matter and dark energy, and they were proposed as new detectors for the observation of gravitational waves. Here I describe past and ongoing experiments with an outlook on what I think are the main prospects in this field and the potential to search for new physics.

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Section: Search For Dark Mattermentioning

confidence: 99%

Section: Search For Dark Mattermentioning

confidence: 99%

Testing gravity with cold atom interferometry: results and prospects

Tino

2021

Quantum Sci. Technol.

112

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“…Here c and represent the speed of light and the reduced Planck constant, respectively. Motivated by this proposal, so far, the precise IS measurements for Ca + [10,11], Yb + [12], Sr + [13], and Sr [14,15] are recently reported. In particular, impressive precision of about 10 mHz in the IS measurement is demonstrated for a particular isotope pair of 87 Sr-88 Sr by a state-of-the-art optical lattice clock technique [14], and for a pair of 86 Sr + -88 Sr + using a novel two-isotope entangled state [13].…”

Section: Introductionmentioning

confidence: 99%

Observation of non-linearity of generalized King plot in the search for new boson

Ono,

Saito,

Ishiyama

et al. 2021

Preprint

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We measure isotope shifts for neutral Yb isotopes on an ultranarrow optical clock transition 1 S0-3 P0 with an accuracy of a few Hz. The part-per-billion precise measurement was possible by loading the ultracold atoms into a three-dimensional magic-wavelength optical lattice and alternately interrogating the isotope pairs, thus minimizing the effects due to the optical lattice light-shift and inter-atomic interaction as well as the drifts of a clock laser frequency and a magnetic field. The determined isotope shifts, combined with one of the recently reported isotope-shift measurements of Yb + on two optical transitions, allow us to successfully construct the King plots. Extremely large non-linearity with the corresponding χ 2 on the order of 10 4 is revealed, and is not explained by a quadratic field shift. We further carry out the generalized King plot for three optical transitions so that we can eliminate the contribution arising from a higher-order effect within the Standard Model which might explain the observed non-linearity of King plots for two transitions. Our analysis of the generalized King plot shows a deviation from linearity at the 3σ level and the upper bound of the product of the couplings for a new boson mediating a force between electrons, and neutrons |yeyn|/( c) < 1 × 10 −10 for the mass less than 1 keV with the 95% confidence level is derived, providing an important step towards probing new physics via isotope-shift spectroscopy.

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mentioning

confidence: 99%

“…As availability of high-accuracy IS data enables probing for new bosons, several efforts were initiated to this end [17][18][19][20][21][22][23], dramatically improving the measurement accuracy previously limited to ≈100 kHz in the IS [24]. Most notably, two experiments with Yb + [21] and Ca + [22] reported on high-precision IS measurements, each employing five stable nuclear-spin-zero isotopes [25]. With these two experiments demonstrating comparable sensitivity to new physics (NP), it is intriguing that no King-plot NL was found in the Ca + work, but NL at the 3σ level was observed in Yb + .…”

mentioning

confidence: 99%

Precision determination of isotope shifts in ytterbium and implications for new physics

Figueroa,

Berengut,

Dzuba

et al. 2021

Preprint

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We report measurements of isotope shifts for the five spinless Yb isotopes on the 6s 2 1 S0 → 5d6s 1 D2 transition using Doppler-free two-photon spectroscopy. We combine these data with existing measurements on two transitions in Yb + [Phys. Rev. Lett. 125, 123002 (2020)], where deviation from King-plot linearity showed hints of a new bosonic force carrier at the 3σ level. The combined data strongly reduces the significance of the new-physics signal. We show that the observed nonlinearity in the joint Yb/Yb + King-plot analysis can be accounted for by the deformation of the Yb nuclei.

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Improved Isotope-Shift-Based Bounds on Bosons beyond the Standard Model through Measurements of the D23/2−

Cited by 69 publications

References 56 publications

Testing gravity with cold atom interferometry: results and prospects

Testing gravity with cold atom interferometry: results and prospects

Observation of non-linearity of generalized King plot in the search for new boson

Precision determination of isotope shifts in ytterbium and implications for new physics

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