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Electric dipole moments of fermi particles

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Il Nuovo Cimento A (1965-1970)

Summary

The electric dipole moments of the nucleons and of the electron and muon are calculated in the intermediate vector boson theory. An intrinsic electric dipole is attributed to the charged vector boson, W±. Results are obtained with the regularization procedure proposed by Lee and Yang, both for their so-calledξ-limiting process, and for an alternative limiting procedure which is appropriate only if the W-boson does not exist. The theory predicts, for reasonable values of the several parameters, a neutron electric dipole as large as 1.3·10−6 nucleon magnetons, which is within a factor two of the present experimental upper bound, and which is readily measurable. The predicted electric dipoles of the other three fermions considered are too small to be measured by techniques currently in use.

Riassunto

Si calcolano, nel quadro della teoria del bosone vettoriale intermedio, i momenti di dipolo elettrico dei nucleoni e dell’elettrone e del muone. Si attribuisce un dipolo elettrico intrinseco al bosone vettoriale carico,W ±. Si ottengono i risultati con il procedimento di regolarizzazione proposto da Lee e Yang, sia con il loro cosiddetto procedimento di limitazioneξ, sia con un altro procedimento di limitazione che è appropriato solo se il bosone W non esiste. La teoria predice, per ragionevoli valori dei numerosi parametri un dipolo elettrico del neutrone di 1.3·10−6 magnetoni nucleari, che è entro il doppio dell’attuale limite superiore sperimentale e che è facilmente misurabile. I dipoli elettrici predetti per gli altri tre fermioni considerati sono troppo piccoli per essere misurati con le tecniche di uso corrente.

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Supported in part by a grant from the National Science Foundation.

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Salzman, F., Salzman, G. Electric dipole moments of fermi particles. Nuovo Cimento A (1965-1970) 41, 443–455 (1966). https://doi.org/10.1007/BF02754814

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  • DOI: https://doi.org/10.1007/BF02754814

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