Proton-Electron Mass Ratio from Laser Spectroscopy of HD$^+$ at the Part-Per-Trillion Level - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Science Année : 2020

Proton-Electron Mass Ratio from Laser Spectroscopy of HD$^+$ at the Part-Per-Trillion Level

Résumé

Accepted values of the masses of several subatomic particles have been under debate since recent measurements in Penning traps produced more precise yet incompatible results, implying possible inconsistencies in closely related physical constants like the proton-electron and deuteron-proton mass ratios. These quantities also influence the predicted vibrational spectrum of the deuterated molecular hydrogen ion in its electronic ground state, of which we measured the v=0 - 9 overtone transition frequency with an uncertainty of 2.9 parts-per-trillion through Doppler-free two-photon laser spectroscopy. Leveraging high-precision ab initio calculations we convert our measurement to tight constraints on the proton-electron and deuteron-proton mass ratios, consistent with the most recent Penning-trap determinations of these quantities, and yielding a new value of the proton-electron mass ratio with an unprecedented precision of 21 parts-per-trillion.
Fichier principal
Vignette du fichier
2204.10674.pdf (959.78 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03652987 , version 1 (24-02-2023)

Identifiants

Citer

Sayan Patra, M. Germann, J.-Ph. Karr, M. Haidar, L. Hilico, et al.. Proton-Electron Mass Ratio from Laser Spectroscopy of HD$^+$ at the Part-Per-Trillion Level. Science, 2020, 369 (6508), pp.1238-1241. ⟨10.1126/science.aba0453⟩. ⟨hal-03652987⟩
29 Consultations
19 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More