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Change of Isotopic Spin in the K_(π2) Decay

Gell-Mann, M. (1957) Change of Isotopic Spin in the K_(π2) Decay. Il Nuovo Cimento, 5 (3). pp. 758-760. ISSN 1827-6121. doi:10.1007/BF02835607.

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In the slow decays-of hyperons and K-mesons into other strongly interacting particles, isotopic spin I is defined before and after the decay but is not conserved. In fact I changes by half-integers. For all such decays that are known, the rule ΔI_z = ± 1/2 (or = ΔS ± 1. where S is strangeness) seems to obtain (1). In particular, the apparent absence of the process Ξ → π + N is attributed to this rule.

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Additional Information:© 1957 Springer. ricevuto il 19 Febbraio 1957.
Issue or Number:3
Record Number:CaltechAUTHORS:20150925-103209034
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Official Citation:Change of isotopic spin in the Kπ2 decay M. Gell-Mann in Il Nuovo Cimento (1955-1965) (1957)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60516
Deposited On:25 Sep 2015 17:59
Last Modified:10 Nov 2021 22:35

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