Extraction of spin-averaged rovibrational transition frequencies in HD
            <sup>+</sup>
            for the determination of fundamental constants

Karr, Jean‐Philippe; Koelemeij, J.C.J.

doi:10.1080/00268976.2023.2216081

Cited by 8 publications

(4 citation statements)

References 38 publications

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“…From a detailed analysis of experimental theoretical results for the (v,N)-(v',N') = (0,0)-(0,1), (0,3)-(9,3), and (0,0)-(1,1) transitions, Karr and Koelemeij have obtained µ p,d /m e = 1 223.899 228 719 (26) [64], which is in good agreement with . .…”

Section: M[α]mentioning

confidence: 99%

“…As can be seen, all the results are in reasonable agreement, although there is 1.5-sigma tension between the results obtained from Penning trap measurements only, and that from HD + spectroscopy and m d /m p . Alternatively, the value for µ p,d from HD + spectroscopy [64] can be combined with the FSU result for m d /m p [48] and the MPIK M[d] [45] to give M[e]. In Table 9, this is compared with M[e] obtained from the g-factor of C 5+ [1].…”

Section: M[α]mentioning

confidence: 99%

“…Table 9 shows only a modest improvement in precision for M[e] from combining the new light-ion masses with the results of HD + spectroscopy. This is due to uncertainty in the QED theory for the (hyperfine-averaged) rovibrational transitions, and due to discrepancies between individual hyperfine components and hyperfine theory [64]. However, some of the measured hyperfine components of the HD + vibrational transitions have quoted uncertainties as small as 1.5 × 10 −12 .…”

Section: Interplay Of Penning Trap Mass Measurements G-factor Measure...mentioning

confidence: 99%

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Progress in High-Precision Mass Measurements of Light Ions

Myers

2024

Atoms

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Significant advances in Penning trap measurements of atomic masses and mass ratios of the proton, deuteron, triton, helion, and alpha-particle have occurred in the last five years. These include a measurement of the mass of the deuteron against 12C with 8.5 × 10−12 fractional uncertainty; resolution of vibrational levels of H2+ as mass and the application of a simultaneous measurement technique to the H2+/D+ cyclotron frequency ratio, yielding a deuteron/proton mass ratio at 5 × 10−12; new measurements of HD+/3He+, HD+/T+, and T+/3He+ leading to a tritium beta-decay Q-value with an uncertainty of 22 meV, and atomic masses of the helion and triton at 13 × 10−12; and a new measurement of the mass of the alpha-particle against 12C at 12 × 10−12. Some of these results are in strong disagreement with previous values in the literature. Their impact in determining a precise proton/electron mass ratio and electron atomic mass from spectroscopy of the HD+ molecular ion is also discussed.

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Section: M[α]mentioning

confidence: 99%

Section: M[α]mentioning

confidence: 99%

Section: Interplay Of Penning Trap Mass Measurements G-factor Measure...mentioning

confidence: 99%

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Progress in High-Precision Mass Measurements of Light Ions

Myers

2024

Atoms

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“…Experimental observables of simple atomic systems with a single or few electrons, such as atomic and molecular hydrogen, helium, and their ions, enable extremely precise tests. The properties of the fundamental particles, such as the mass of the electron [1,2] and the mass and charge radius of the light nuclei [3][4][5], are thus of importance for fundamental physics. They interconnect a variety of individual observables from transition frequencies in hydrogen, ruled by the Rydberg constant [6], to the magnetic moment of the electron, which depends on the fine-structure constant [7].…”

mentioning

confidence: 99%