dorsal/arxiv
View SchemaRole of negative-energy states and Breit interaction in calculation of atomic parity-nonconserving amplitudes
| Authors | A. Derevianko |
|---|---|
| Categories | |
| ArXiv ID | physics/0001046 |
| URL | https://arxiv.org/abs/physics/0001046 |
Abstract
It is demonstrated that Breit and negative-energy state contributions reduce the 2.5 sigma deviation [S.C. Bennett and C.E. Wieman, Phys. Rev. Lett. 82, 2484 (1999)] in the value of the weak charge of 133Cs from the Standard Model prediction to 1.7sigma. The corrections are obtained in the relativistic many-body perturbation theory by combining all-order Coulomb and second-order Breit contributions. The corrections to parity-nonconserving amplitudes amount to 0.6% in 133Cs and 1.1% in 223Fr. The relevant magnetic-dipole hyperfine structure constants are modified at the level of 0.3% in Cs, and 0.6% in Fr. Electric-dipole matrix elements are affected at 0.1% level in Cs and a few 0.1% in Fr.
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"abstract": "It is demonstrated that Breit and negative-energy state contributions reduce\nthe 2.5 sigma deviation [S.C. Bennett and C.E. Wieman, Phys. Rev. Lett. 82,\n2484 (1999)] in the value of the weak charge of 133Cs from the Standard Model\nprediction to 1.7sigma. The corrections are obtained in the relativistic\nmany-body perturbation theory by combining all-order Coulomb and second-order\nBreit contributions. The corrections to parity-nonconserving amplitudes amount\nto 0.6% in 133Cs and 1.1% in 223Fr. The relevant magnetic-dipole hyperfine\nstructure constants are modified at the level of 0.3% in Cs, and 0.6% in Fr.\nElectric-dipole matrix elements are affected at 0.1% level in Cs and a few 0.1%\nin Fr.",
"arxiv_id": "physics/0001046",
"authors": [
"A. Derevianko"
],
"categories": [
"physics.atom-ph",
"hep-ph"
],
"title": "Role of negative-energy states and Breit interaction in calculation of atomic parity-nonconserving amplitudes",
"url": "https://arxiv.org/abs/physics/0001046"
},
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