Stability of the proton-to-electron mass ratio
In: ISSN: 0031-9007, 2008
Online
academicJournal
Zugriff:
International audience ; We report a limit on the fractional temporal variation of the proton-to-electron mass ratio as , obtained by comparing the frequency of a rovibrational transition in SF6 with the fundamental hyperfine transition in Cs. The SF6 transition was accessed using a CO2 laser to interrogate spatial 2-photon Ramsey fringes. The atomic transition was accessed using a primary standard controlled with a Cs fountain. This result is direct and model-free.
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Stability of the proton-to-electron mass ratio
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| Autor/in / Beteiligte Person: | Shelkovnikov, Alexander ; James Butcher, Robert ; Chardonnet, Christian ; Amy-Klein, Anne ; Laboratoire de Physique des Lasers (LPL) ; Université Paris 13 (UP13)-Centre National de la Recherche Scientifique (CNRS) ; P. N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow (LPI RAS) ; Russian Academy of Sciences Moscow (RAS) ; The Cavendish Laboratory ; University of Cambridge UK (CAM) |
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| Zeitschrift: | ISSN: 0031-9007, 2008 |
| Veröffentlichung: | HAL CCSD ; American Physical Society, 2008 |
| Medientyp: | academicJournal |
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