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Methodological notes


Transitional currents of spin-1/2 particles


Russian Federation State Scientific Center ‘A.I. Alikhanov Institute of Theoretical and Experimental Physics’, ul. Bolshaya Cheremushkinskaya 25, Moscow, 117259, Russian Federation

The problem of constructing explicitly covariant representations for transitional currents of spin-1/2 particles is solved for both the nonrelativistic theory and the relativistic theory with massive particles. In the massless case, such representations exist only for transitional currents that are nondiagonal in helicity. The diagonal currents have algebraic representations that are not explicitly covariant.

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Fulltext is also available at DOI: 10.1070/PU1994v037n06ABEH000029
PACS: 03.70.+k, 11.40.−q (all)
DOI: 10.1070/PU1994v037n06ABEH000029
URL: https://ufn.ru/en/articles/1994/6/e/
A1994RB07800005
Citation: Krivoruchenko M I "Transitional currents of spin-1/2 particles" Phys. Usp. 37 601–606 (1994)
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Îðèãèíàë: Êðèâîðó÷åíêî Ì È «Òîêè ïåðåõîäà ÷àñòèö ñî ñïèíîì 1/2» ÓÔÍ 164 643–649 (1994); DOI: 10.3367/UFNr.0164.199406e.0643

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