TY - JOUR

T1 - Narrow and Ultranarrow Transitions in Highly Charged Xe Ions as Probes of Fifth Forces

AU - Rehbehn, Nils-Holger

AU - Rosner, Michael K.

AU - Berengut, Julian C.

AU - Schmidt, Piet O.

AU - Pfeifer, Thomas

AU - Gu, Ming Feng

AU - López-Urrutia, José R. Crespo

N1 - Funding Information: Financial support was provided by the Max-Planck-Gesellschaft. We acknowledge support from the Max Planck-Riken-PTB Center for Time, Constants, and Fundamental Symmetries, the collaborative research center “SFB 1225 (ISOQUANT)” and the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy—EXC-2123 QuantumFrontiers—390837967. J. C. B. was supported in this work by the Alexander von Humboldt Foundation and the Australian Research Council (DP190100974). This work has been funded by the “European Metrology Program for Innovation and Research” (EMPIR) project 20FUN01 TSCAC. This project has received funding from the EMPIR programme co-financed by the participating states and from the European Union’s Horizon 2020 research and innovation programme. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 101019987).

PY - 2023/10/20

Y1 - 2023/10/20

N2 - Optical frequency metrology in atoms and ions can probe hypothetical fifth forces between electrons and neutrons by sensing minute perturbations of the electronic wave function induced by them. A generalized King plot has been proposed to distinguish them from possible standard model effects arising from, e.g., finite nuclear size and electronic correlations. Additional isotopes and transitions are required for this approach. Xenon is an excellent candidate, with seven stable isotopes with zero nuclear spin, however it has no known visible ground-state transitions for high resolution spectroscopy. To address this, we have found and measured twelve magnetic-dipole lines in its highly charged ions and theoretically studied their sensitivity to fifth forces as well as the suppression of spurious higher-order standard model effects. Moreover, we identified at 764.8753(16) nm a E2-type ground-state transition with 500 s excited state lifetime as a potential clock candidate further enhancing our proposed scheme.

AB - Optical frequency metrology in atoms and ions can probe hypothetical fifth forces between electrons and neutrons by sensing minute perturbations of the electronic wave function induced by them. A generalized King plot has been proposed to distinguish them from possible standard model effects arising from, e.g., finite nuclear size and electronic correlations. Additional isotopes and transitions are required for this approach. Xenon is an excellent candidate, with seven stable isotopes with zero nuclear spin, however it has no known visible ground-state transitions for high resolution spectroscopy. To address this, we have found and measured twelve magnetic-dipole lines in its highly charged ions and theoretically studied their sensitivity to fifth forces as well as the suppression of spurious higher-order standard model effects. Moreover, we identified at 764.8753(16) nm a E2-type ground-state transition with 500 s excited state lifetime as a potential clock candidate further enhancing our proposed scheme.

UR - http://www.scopus.com/inward/record.url?scp=85175789500&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.131.161803

DO - 10.1103/PhysRevLett.131.161803

M3 - Article

VL - 131

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 16

M1 - 161803

ER -