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Article Dans Une Revue Physical Review Letters Année : 2008

Stability of the proton-to-electron mass ratio

Résumé

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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Dates et versions

hal-00263674 , version 1 (12-03-2008)

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Alexander Shelkovnikov, Robert James Butcher, Christian Chardonnet, Anne Amy-Klein. Stability of the proton-to-electron mass ratio. Physical Review Letters, 2008, 100, pp.150801. ⟨hal-00263674⟩
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