Atomic Parity Violation : Principles, Recent Results, Present Motivations
| Autor: | J. Guena, Marie-Anne Bouchiat, Michel Lintz |
|---|---|
| Přispěvatelé: | Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Kastler Brossel (LKB (Lhomond)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS Paris), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Nuclear and High Energy Physics
Particle physics atomic parity violation Atomic Physics (physics.atom-ph) media_common.quotation_subject Physics beyond the Standard Model FOS: Physical sciences General Physics and Astronomy 01 natural sciences Asymmetry PACS Nos.: 32.80.Ys 11.30.Er 42.50.Gy Physics - Atomic Physics Physics - General Physics 0103 physical sciences Physics::Atomic Physics Stimulated emission 010306 general physics media_common Physics [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph] 010308 nuclear & particles physics Electroweak interaction Electroweak interference Sigma Astronomy and Astrophysics Charge (physics) Parity (physics) Physicist nuclear weak charge [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph] General Physics (physics.gen-ph) stimulated-emission detection Atomic physics |
| Zdroj: | Modern Physics Letters A Modern Physics Letters A, 2005, 20, 6, pp.375-389 Modern Physics Letters A, World Scientific Publishing, 2005, 20, 6, pp.375-389 HAL |
| ISSN: | 0217-7323 |
| Popis: | We review the progress made in the determination of the weak charge, QW, of the cesium nucleus which raises the status of Atomic Parity Violation measurements to that of a precision electroweak test. Not only is it necessary to have a precision measurement of the electroweak asymmetry in the highly forbidden 6S–7S transition, but one also needs a precise calibration procedure. The 1999 precision measurement by the Boulder group implied a 2.5 σ deviation of QW from the theoretical prediction. This triggered many particle physicist suggestions as well as examination by atomic theoretical physicists of several sources of corrections. After about three years, the disagreement was removed without appealing to "New Physics". Concurrently, an original experimental approach was developed in our group for more than a decade. It is based on detection by stimulated emission with amplification of the left–right asymmetry. We present our decisive, recent progress together with our latest results. We emphasize the important impact for electroweak theory, of future measurements in cesium possibly pushed to the 0.1% level. Other possible approaches are currently explored in several atoms. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|