Untitled

Meyer, B. S.; Bagayev, S. N.; Baird, P E G; Bakule, Pavel; Boshier, M. G.; Breitruck, A.; Cornish, Simon L.; Dychkov, S; Eaton, G. H.; Großmann, A.; Hubl, D; Hughes, V. W.; Jungmann, Klaus-Peter; Lane, I.C.; Liu, Yi-Wei; Lucas, David M.; Matyugin, Yu. A.; Merkel, J.; Putlitz, G. zu; Reinhard, S.; Sandars, P. G. H.; Santra, Robin; Schmidt, PV; Scott, C.A.; Toner, W.T.; Towrie, Michael; Träger, K.; Willmann, Lorenz; Yakhontov,

doi:10.1023/a:1012691517257

Cited by 11 publications

(20 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Knowledge of the muon mass is currently the limiting factor in how well the theory and experiment can be compared. The 1S -2S transition in muonium has also been experimentally studied by laser spectroscopy and recent measurements [167] are in good agreement with theory. Only the 1S state can be produced efficiently, but even then the numbers of muonium atoms are limited and a pulsed laser system must be used to probe the transition with a resulting reduction in precision.…”

Section: Leptonic Systemssupporting

confidence: 70%

Hydrogenic systems, frequency standards and fundamental constants

Flowers

Klein²,

Margolis³

2004

Contemporary Physics

View full text Add to dashboard Cite

Hydrogenic (two-body) systems are the only atomic systems for which uncertainties in calculations of the energy levels approach the current state of the art in frequency measurement. This article discusses progress in the theory and measurement of transition frequencies in hydrogenic systems. These studies have relevance to the determination of fundamental constants and the testing of physical theories, especially quantum electrodynamics. A set of high accuracy calculable frequency standards could also be realized by using hydrogenic systems.

show abstract

Section: Leptonic Systemssupporting

confidence: 70%

Hydrogenic systems, frequency standards and fundamental constants

Flowers

Klein²,

Margolis³

2004

Contemporary Physics

View full text Add to dashboard Cite

show abstract

“…The major contribution to the hyperfine splitting (HFS) also comes from one-photon exchange, but from its magnetic part. The most accurate experimental values of the related transitions are ν(1s − 2s) = 2455 528 941.0(9.8) MHz , [1] , ν(1s, hfs) = 4463 302.776(51) kHz , [2] .…”

Section: Introductionmentioning

confidence: 99%

Constraints on a long-range spin-dependent interaction from precision atomic physics

Karshenboim

2010

Phys. Rev. D

View full text Add to dashboard Cite

We present a phenomenological constraint on a pseudovector light boson beyond the Standard Model, which can induce a long-range spin-dependent interaction α ′′ (s1 · s2) e −λr /r. In the range of masses from 4 keV/c 2 to those related to macroscopic distances (of λ −1 ∼ 1 cm) the spin-dependent coupling constant α ′′ of the electron-muon interaction is constrained at the level below a part in 10 15 . The constraint is weakened while extending to higher masses. The strongest constraint is related to the lepton-lepton interaction. Constraints on spin-dependent interactions of some other particles are also discussed. The results are obtained from data on the HFS interval of the ground state in muonium and a few other light hydrogen-like atoms.

show abstract

“…Laser spectroscopy is performed by inducing a transition between a metastable state and a short-lived state, for example, between (n, l) = (39, 35) and (38,34) ofp 4 He + with a transition wavelength of 597.3 nm (Fig. 1).…”

Section: Formation Of Antiprotonic Helium Atoms and Laser Spectroscopymentioning

confidence: 99%

“…The time evolution of the chirp ∆ν c (t) in the laser pulse was derived in the following way [31,32,33,34]. The cw seed laser beam was split and its frequency was shifted by 400 MHz using an acousto-optic modulator (AOM).…”

Section: High Precision Spectroscopy Using An Optical Frequency Comb mentioning

confidence: 99%

“…We introduced a different technique to measure a metastable-to-metastable transition, (n, l) = (36, 34) → (35, 33) ofp 4 He + with the natural width Γ n ∼ 100 kHz [15]. A second laser pulse with λ = 417.8 nm then mixed the population of the states (36,34) and (35,33). A laser pulse tuned at the resonance wavelength λ = 372.6-nm of the lower transition first depleted the state (35,33).…”

Section: Metastable-to-metastable Transitionmentioning

confidence: 99%

See 1 more Smart Citation

Determination of the antiproton-to-electron mass ratio by high precision laser spectroscopy of p̄He[sup +]

Ono¹,

Hori²,

Hayano³

et al. 2008

AIP Conference Proceedings

View full text Add to dashboard Cite

The ASACUSA collaboration has carried out laser spectroscopy of an antiprotonic helium atom (pHe + : a Coulomb three-body system consisted of an antiproton, electron, and a helium nucleus) at CERN's Antiproton Decelerator facility and measured transition frequencies of pHe + . By comparing the measured frequencies with three-body QED calculations, the antiprotonto-electron mass ratio mp/m e was determined. We recently developed a new laser system consisting of single-mode continuous-wave lasers, a femtosecond optical frequency comb, a pulse-amplified dye laser, and a chirp compensation, and achieved a precision of ∼ 1 × 10 −8 on thepHe + transition frequencies, which was about one order of magnitude improvement. The comparison of the measured frequencies and the three-body QED calculations yielded the antiproton-to-electron mass ratio of mp/m e = 1836.152 674(5). Combined with a constraint on the proton and antiproton charge-tomass ratio of the TRAP group, a limit on any CPT-violating difference between the antiproton and proton charges and masses was also set as |Q p + Qp|/Q p ∼ |m p − mp|/m p < 2 × 10 −9 at a confidence level of 90 %.

show abstract

Untitled

Cited by 11 publications

References 10 publications

Hydrogenic systems, frequency standards and fundamental constants

Hydrogenic systems, frequency standards and fundamental constants

Constraints on a long-range spin-dependent interaction from precision atomic physics

Determination of the antiproton-to-electron mass ratio by high precision laser spectroscopy of p̄He[sup +]

Contact Info

Product

Resources

About