[Delta]I = 1/2 Rule for Non-Leptonic Strangeness-Changing Decay Processes

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Gell-Mann and Pais were the first to suggest that the non-leptonic decay processes of strange particles may be subject to an isospin selection rule, allowing only those decay transitions which involve a change [delta]I = 1/2 in to total isopin of the system. At present, however, there is really no theoretical framework for the description of weak interactions into which this selection rule fits in a natural and compelling way. The report includes sections on the 91) decay processes of the [caret] hyperon, (2) decay processes, (3) [complex conjugate] decay processes, and (6) K[pi]3 decay processes. We have considered the … continued below

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33 pages : illustrations.

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Dalitz, R. H. (Richard Henry), 1925-2006. December 2, 1963.

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Gell-Mann and Pais were the first to suggest that the non-leptonic decay processes of strange particles may be subject to an isospin selection rule, allowing only those decay transitions which involve a change [delta]I = 1/2 in to total isopin of the system. At present, however, there is really no theoretical framework for the description of weak interactions into which this selection rule fits in a natural and compelling way. The report includes sections on the 91) decay processes of the [caret] hyperon, (2) decay processes, (3) [complex conjugate] decay processes, and (6) K[pi]3 decay processes. We have considered the evidence on all of the known non-leeptonic non-radiative decay modes of strange particles. All of this evidence is in good qualitative accord with the [delta]I = 1/2 selection rule.

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33 pages : illustrations.

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Digitized from microopaque cards.

Invited paper presented at the Brookhaven Conference on Weak Interactions, September, 1963.

Work supported by the research program of the U.S. Atomic Energy Commission at the University of Chicago.

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  • Report No.: CONF-231-3
  • SuDoc Number: Y 3.At 7:22/CONF-231-3
  • Accession or Local Control No: metadc1201754
  • Archival Resource Key: ark:/67531/metadc1201754

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Technical Report Archive and Image Library

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  • December 2, 1963

Added to The UNT Digital Library

  • Aug. 27, 2019, 3:53 p.m.

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  • April 1, 2020, 4:08 p.m.

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Dalitz, R. H. (Richard Henry), 1925-2006. [Delta]I = 1/2 Rule for Non-Leptonic Strangeness-Changing Decay Processes, report, December 2, 1963; Oak Ridge, Tennessee.. (https://digital.library.unt.edu/ark:/67531/metadc1201754/: accessed August 9, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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