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Extensions ofSU(2)L×U(1) models and the form factors of the massive Dirac neutrinos

Обобщение модепейSU 2L×U1 и форм-факторов для массивных дираковских нейтрино

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Il Nuovo Cimento A (1965-1970)

An Erratum to this article was published on 01 September 1989

Summary

After the discovery of violation of parity andCP-conserving in weak interactions, many authors studied the interaction of a charged spin-1/2 particle with a weak electromagnetic field which has four static couplings described by its charge, magnetic moment, charge radius and the anapole moment. In the standardSU(2)×U(1) model, the neutrinos are predicted to be massless. However, there are many possible extensions of the standard model to give massive neutrinos (Dirac and Majorana neutrinos). Assuming the standardSU(2)×U(1) model with the leptons in left-handed doublets and right-handed singlets plus a single Higgs doublet and using 't Hooft-Feynman gauge we calculate the magnetic moment and the anapole moment of massive (Dirac) neutrinos.

Riassunto

Dopo la scoperta della violazione di parità e della conservazioneCP nelle interazioni deboli, molti autori hanno studiato l'interazione di una particella carica con spin 1/2 con un campo elettromagnetico debole che ha quattro accoppiamenti statici descritti dalla sua carica, dal momento magnetico, dal raggio di carica e dal momento dell'anapolo. Nel modello standardSU(2)×U(1) si prevede che i neutrini siano privi di massa. Comunque ci sono numerose possibili estensioni del modello standard che danno neutrini senza massa (neutrini di Dirac e Majorana). Assumendo il modello standardSU(2)×U(1) con i leptoni in doppietti a sinistra e singoletti a destra piú un doppietto singolo di Higgs ed usando il gange di 't Hooft-Feynman si calcola il momento magnetico e il momento dell'analogo di neutrini (di Dirac) con massa.

Резьме

После открытия нарушения четности и CP-сохранения в слабых взаимодействиях, многие авторы исследовали взаимодействие заряженных частиц со спином 1/2 со слабым электромагнитным полем, которое имеет уетыре статичаских связи, описываемых зарядом, магнитным моментом, радиусом заряда и анапольным моментом. В стандартнойSU 2×U1 модели предсказывается, что нейтрино являются безмассобыми. Однако, существует множество возможных обобщений стандартной модели, которые приводят к массивным нейтрино (нейтрино Дирака и Майораны). Предполагая стандартнуюSU 2×U1 модель с лептонами в левостронних дуплетах и правосторонних синглетах плюс дуплет Хиггса и используя калибровку 'т Хуфта-Фейнмана, мы вычисляем магнитный момент и анапольный момент массивного дираковского нейтрино.

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Supported by the Scientific and Technical Research Council of Turkey (TÜBITAK), Ankara.

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An erratum to this article is available at http://dx.doi.org/10.1007/BF02730764.

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Abak, M., Aydin, C. Extensions ofSU(2)L×U(1) models and the form factors of the massive Dirac neutrinos. Nuov Cim A 101, 597–606 (1989). https://doi.org/10.1007/BF02848082

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PACS 11.30.Jw

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