Summary
The renormalization of the weak axial-vector coupling constant in the decay\(\Xi ^0 \to \Sigma ^ + + e^ - + \bar \nu \) is calculated on the basis of the assumption that theSU 3 breaking is unimportant at high energies and the result used to show that the equality of the vector and axial-vector Cabibbo angles, which is expected to hold in the limit of exactSU 3 symmetry, is preserved by the symmetry breaking.
Riassunto
Si calcola la rinormalizzazione della costante di accoppiamento debole del vettore assiale nel decadimento\(\Xi ^0 \to \Sigma ^ + + e^ - + \bar \nu \) in base all'ipotesi che la rottura della simmetria del gruppoSU 3 non è importante alle alte energie e il risultato viene usato per mostrare che l'uguaglianza degli angoli di Cabibbo del vettore e del vettore assiale, che si suppone essere valida nel limite della esatta simmetria del gruppoSU 3, è conservata dalla rottura della simmetria.
Резюме
Вычисляется перенормировка слабой аксиально-векторной константы связи в распаде\(\Xi ^0 \to \Sigma ^ + + e^ - + \bar \nu \) на основе предположения о том, что нарушениеSU 3 является несущественным при высоких энергиях, и используемый результат показывает, что равенство векторного и аксиально-векторного утлов Кабиббо, которое, как ожидается, справедливо в пределе точнойSU 3 симметрии, сохраняется при нарушении симметрии.
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Supported by the U.S. Office of Naval Research under Contract N00014-67-A-0305-0005.
Traduzione a cura della Redazione.
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Nasrallah, N.F. Relation between vector and axial-vector Cabibbo angles in brokenSU 3 symmetry. Nuovo Cimento A (1965-1970) 53, 387–392 (1968). https://doi.org/10.1007/BF02800117
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DOI: https://doi.org/10.1007/BF02800117