CPT and Lorentz symmetry tests with hydrogen using a novel in-beam hyperfine spectroscopy method applicable to antihydrogen experiments
arXiv:2403.17763 · doi:10.1016/j.physletb.2024.139012
Abstract
We present a Rabi-type measurement of two ground-state hydrogen hyperfine transitions performed in two opposite external magnetic field directions. This puts first constraints at the level of 2.3 10^-21 GeV on a set of coefficients of the Standard Model Extension, which were not measured by previous experiments. Moreover, we introduce a novel method, applicable to antihydrogen hyperfine spectroscopy in a beam, that determines the zero-field hyperfine transition frequency from the two transitions measured at the same magnetic field. Our value, nu_0 = 1.420 405 751 63(63) GHz, is in agreement with literature at a relative precision of 0.44 ppb. This is the highest precision achieved on hydrogen in a beam, improving over previous results by a factor of 6.
8 pages, 5 figures, 2 tables, corresponding author: [email protected] (C. Malbrunot)
References in corpus (14)
- Lorentz-Violating Extension of the Standard Model
- Measurement of the fine-structure constant as a test of the Standard Model
- Precision physics of simple atoms: QED tests, nuclear structure and fundamental constants
- CPT and Lorentz Tests in Hydrogen and Antihydrogen
- Fermions with Lorentz-violating operators of arbitrary dimension
- Measurement of the Electron Magnetic Moment
- Lorentz and CPT tests with hydrogen, antihydrogen, and related systems
- Testing Lorentz and CPT symmetry with hydrogen masers
- In-beam measurement of the hydrogen hyperfine splitting - towards antihydrogen spectroscopy
- Zeeman effect of the hyperfine structure levels in hydrogenlike ions
- A hydrogen beam to characterize the ASACUSA antihydrogen hyperfine spectrometer
- On the Combination Procedure of Correlated Errors
- A large octupole magnetic trap for research with atomic hydrogen
- Adaptable platform for trapped cold electrons, hydrogen and lithium anions and cations