Precise measurement of parity nonconserving optical rotation at 876 nm in atomic bismuth

Macpherson, M.J.D.; Zetie, K. P.; Warrington, R. B.; Stacey, D. N.; Hoare, James P.

doi:10.1103/physrevlett.67.2784

Cited by 131 publications

(96 citation statements)

References 12 publications

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“…These effects have been described by Peskin and Takeuchi [9] in terms of two parameters S and T , upon which various observables depend linearly, with S = T = 0 corresponding to "no new physics," given nominal values of the top quark and Higgs boson masses. The weak charge Q W measured in parity-violation experiments in such atoms as cesium [10,11], bismuth [12], lead [13], and thallium [14,15] is mainly sensitive to the variable S, with very small dependence on T [16,17,18]. Thus, atomic parity violation experiments can shed unique light on certain types of new physics which contribute to the parameter S [19,20,21].…”

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confidence: 99%

Role of present and future atomic parity violation experiments in precision electroweak tests

Rosner

2002

Phys. Rev. D

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Recent reanalyses of the atomic physics effects on the weak charge in cesium have led to a value in much closer agreement with predictions of the Standard Model. We review precision electroweak tests, their implications for upper bounds on the mass of the Higgs boson, possible ways in which these bounds may be circumvented, and the requirements placed upon accuracy of future atomic parity violation experiments by these considerations. [3,5]) with this property have been constructed. Other related discussions may be found in [6,7,8].Among the electroweak observables that play a role in precise tests of the radiative corrections in the theory, atomic parity violation plays a special role. Many types of new physics affect what are known as "oblique corrections," through vacuum polarization of the photon, Z, and W bosons. These effects have been described by Peskin and Takeuchi [9] in terms of two parameters S and T , upon which various observables depend linearly, with S = T = 0 corresponding to "no new physics," given nominal values of the top quark and Higgs boson masses. The weak charge Q W measured in parity-violation experiments in such atoms as cesium [10, 11], bismuth [12], lead [13], and thallium [14,15] is mainly sensitive to the variable S, with very small dependence on T [16, 17, 18]. Thus, atomic parity violation experiments can shed unique light on certain types of new physics which contribute to the parameter S [19,20,21].Atomic physics calculations have been carried out for such systems as cesium [22] and thallium [23]. In 1999 the JILA-Boulder group reported measurements in cesium [11] that reduced uncertainties in previous calculations. This led to a resulting weak charge, Q W (Cs) = −72.06 ± 0.28 expt ± 0.34 theor = −72.06 ± 0.46 which represented a

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Role of present and future atomic parity violation experiments in precision electroweak tests

Rosner

2002

Phys. Rev. D

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“…Recently, parity nonconservation has been measured in bismuth with high accuracy by MacPherson et al [4].…”

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Determination of radiative lifetimes of neutral bismuth by time-resolved uv-vuv laser spectroscopy

et al. 1995

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Time-resolved laser spectroscopy was used to measure natural radiative lifetimes of ten excited states of neutral bismuth. Four levels of the 6p ns P&/& sequence (n =7,8,9, 10) and the 6p 7s P3/2 5/2 and 6p nd D3/2. 5/2 (n =6,7) levels were investigated. The results are compared with previous data when possible. Revised absolute transition probabilities for 26 lines are given. Several levels required vacuum-ultraviolet (vuv) excitation, which was achieved by stimulated anti-Stokes Raman shifting of frequency-tripled dye-laser radiation in high-pressure H& gas.

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“…4,5 For chemists and biochemists the most remarkable experiments up to now are certainly the optical rotation observed in atomic vapors of metals such as Pb, 6 Bi, 7 and T1, 8 and the diffused circularly polarized light observed at right angle from Cs vapor located in an achiral environment. 9 In molecular physics, the situation is quite different.…”

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NMR and parity nonconservation. Experimental requirements to observe a difference between enantiomer signals

Robert

Barra

2001

Chirality

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Precise measurement of parity nonconserving optical rotation at 876 nm in atomic bismuth

Cited by 131 publications

References 12 publications

Role of present and future atomic parity violation experiments in precision electroweak tests

Role of present and future atomic parity violation experiments in precision electroweak tests

Determination of radiative lifetimes of neutral bismuth by time-resolved uv-vuv laser spectroscopy

NMR and parity nonconservation. Experimental requirements to observe a difference between enantiomer signals

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