Summary
It is shown that Kim and Primakoff’s suggestion that second-class axial vector currents are present in the semi-leptonic weak Hamiltonian leads toT-violating effects in π+→ℓ+vℓγ. Using Maiani’s model for these currents and dominating them by the B-meson, we estimate the size of possibleT-violating effects. Theoretical predictions are compared with current experimental evidence.
Riassunto
Si dimostra che il suggerimento di Kim e Primakoff che le correnti vettoriali assiali della seconda classe siano presenti nella hamiltoniana debole semileptonica porta a risultati che violanoT in π+→ℓ+vℓγ. Usando il modello di Maiani per queste correnti e dominandole col mesone B, si calcola l’ordine di grandezza degli effetti che violanoT. Si confrontano le previsioni teoriche con i dati sperimentali sulle correnti.
Реэюме
Покаэывается, что предположение Кима и Примакова о том, что аксиально-векторные токи второго класса присутствуют в полулептонном слабом Гамильтониане, приводит к Эффектам T-нарущения в π+→ℓ+vℓγ. Йспольэуя модель Майани для Этих токов и их доминантность, благодаря В-меэону, мы оцениваем величину воэможных Эффектов Г-нарущения. Теоретические предскаэания сравниваются с Эксперинментальным подтверждением токов.
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Research supported by the Air Force Office of Scientific Research under contract AF 49 (638)-1545.
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Holstein, B.R. The B-meson andT-violation in radiative π decay. Nuovo Cimento A (1965-1970) 68, 369–382 (1970). https://doi.org/10.1007/BF02758133
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DOI: https://doi.org/10.1007/BF02758133