Search for Parity-Nonconserving Optical Rotation in Atomic Bismuth

Baird, P E G; Brimicombe, M. W. S. M.; Hunt, R. G.; Roberts, G. J.; Sandars, P. G. H.; Stacey, D. N.

doi:10.1103/physrevlett.39.798

Cited by 151 publications

(20 citation statements)

References 9 publications

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“…1. It is similar in nature to the interference [3] between a virtual photon and a virtual Z 0 which gives rise for example to the well known asymmetry [4] in e + e − → µ + µ − , to the parity-violating asymmetry in the scattering of polarized electrons from nuclei [5], or to the parity-violation observed in atomic systems [6]. Unlike electroweak interference between a photon and a Z 0 , which have the same quantum numbers, chromo-electroweak interference between a gluon and an electroweak boson, which have different color and flavor quantum numbers, can occur only if the gluon and the electroweak boson are exchanged in different channels as shown in Fig.…”

Section: Introductionmentioning

confidence: 96%

“…We note that the subscripts labeling the parton momenta p i stand for particular points in momentum space and not for parton quantum numbers. To be more precise, let us write the parton level reaction as follows: 6) where a i stand for parton flavors. The quantities J 3 defined in Eq.…”

Section: Kinematicsmentioning

confidence: 99%

“…• out of phase were it not for spinorial factors in the amplitudes that supply a compensating factor of i that comes from spinor traces such as 6) in the spin-averaged cross section. In fact, the interference cross sections presented in Sec.…”

Section: Chromo-electroweak Interferencementioning

confidence: 99%

“…6 The wave function of an incoming photon is obtained either by crossing k → −k or by complex conjugation:…”

Section: E Photon Wave Functionsmentioning

confidence: 99%

See 3 more Smart Citations

Erratum: Chromoelectroweak interference and parity-violating asymmetries in the production of an electroweak boson + two jets in hadron collisions

Gonsalves¹,

Wai²

1995

Phys. Rev. D

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In the Standard Model the process qq → qqV (where V = W ± , Z 0 or γ) can occur via gluon exchange and also via W ± or Z 0 exchange. The corresponding chromodynamic and electroweak amplitudes can interfere with one another. These interference cross sections are largest when the exchanged W ± or Z 0 is on-shell when they are also odd under parity. Interference cross sections computed using helicity-amplitude techniques are presented for all interesting subprocesses as well as for the processes qq → qqll in which the lepton pair ll comes from the decay of V on-shell. Parity-violating asymmetries are defined and presented at the parton level and for the hadronic processes pp or pp → V + 2 jets or ll + 2 jets. These asymmetries are independent of the polarizations of all particles involved, and do not require that the flavors of the jet partons be measured. They are generally of order 0

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Section: Introductionmentioning

confidence: 96%

Section: Kinematicsmentioning

confidence: 99%

Section: Chromo-electroweak Interferencementioning

confidence: 99%

“…6 The wave function of an incoming photon is obtained either by crossing k → −k or by complex conjugation:…”

Section: E Photon Wave Functionsmentioning

confidence: 99%

See 2 more Smart Citations

Erratum: Chromoelectroweak interference and parity-violating asymmetries in the production of an electroweak boson + two jets in hadron collisions

Gonsalves¹,

Wai²

1995

Phys. Rev. D

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“…Oxford (Baird et al 1977), and Novosibirsk (Barkov & Zolotorev 1978a,b; As noted earlier, the optical rotation per unit absorption length ¢/£ follows a dispersion shape, and the peaks of dispersion correspond to rotations of 1 -2 x 10-7 radians (see Figure 14). An effect this small cannot be measured with a bismuth cell between crossed polarizers.…”

mentioning

confidence: 99%

The Parity Non-Conserving Electron-Nucleon Interaction

Commins¹,

Bucksbaum²

1980

Annu. Rev. Nucl. Part. Sci.

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Experimental Consequences of the Asymptotically FreeSU(5)-Model

Kalashnikov

1983

Fortschr. Phys.

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The experimental consequences of the asymptotically free SU(5)‐theory are presented which make it possible to judge about its reliability. The phenomenology of the τ‐lepton is analysed with special attention paid to the so‐called exotic processes which must solve whether “light” or “heavy” the ντ‐neutrino should be. These exotic processes are completely forbidden within standard SU(5) schemes. The problem of the finite mass of the e, μ‐neutrino which is a four‐component Dirac spinor interacting via the Zel'dovitch‐Mahmound‐Konopinski scheme is discussed. The finiteness of such neutrino mass is a peculiarity of the SU(5) theory under discussion, although its value is not fixed here in a unique way. The version of the theory wherein mν ≦ 10−3 eV is of especial interest since in this case the proton instability and the finite e, μ‐neutrino mass are found to be explained in a common way as manifestations of the existence of superheavy leptoquark bosons in the theory. The possibility is pointed out to explain within the SU(5) theory under consideration the existing experimental situations concerning the search for parity violating effects in atoms. It is shown that the present SU(5) theory encounters no difficulty in this respect and can recommend itself to any experimental set of data, whereas the standard schemes of SU(5) unification cannot. Cosmological consequences of the asymptotically free SU(5) theory are briefly discussed and the latter is found to rather reasonably explain a number of facts about the very early evolution of the Universe.

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Search for Parity-Nonconserving Optical Rotation in Atomic Bismuth

Cited by 151 publications

References 9 publications

Erratum: Chromoelectroweak interference and parity-violating asymmetries in the production of an electroweak boson + two jets in hadron collisions

Erratum: Chromoelectroweak interference and parity-violating asymmetries in the production of an electroweak boson + two jets in hadron collisions

The Parity Non-Conserving Electron-Nucleon Interaction

Experimental Consequences of the Asymptotically FreeSU(5)-Model

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