The [Sigma/Alpha] Branching Ratio Of [Y*1]

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Recently a T=1 resonance in the [Alpha w] system called [Y*1] has been observed with a mass of 1385 Mev. Two types of resonances have been predicted that might relate this observation to other elementary-particle interactions: (1) P 3/2 resonances in the Alpha w and Sigma w systems predicted by global symmetry corresponding to the (3/2, 3/2) resonance of the wN system, (2) a spin-1/2 Y-w resonance resulting from a bound state in the KN system. The position and width of the observed [Y*1] resonance agree with both theories but since the spin and parity have not yet been determined, … continued below

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13 pages : illustrations

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Alston, Margaret H.; Alvarez, Luis W., 1911-1988; Eberhard, Phillippe; Good, Myron L.; Graziano, William; Ticho, Harold K., 1921-2020 et al. April 25, 1961.

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Recently a T=1 resonance in the [Alpha w] system called [Y*1] has been observed with a mass of 1385 Mev. Two types of resonances have been predicted that might relate this observation to other elementary-particle interactions: (1) P 3/2 resonances in the Alpha w and Sigma w systems predicted by global symmetry corresponding to the (3/2, 3/2) resonance of the wN system, (2) a spin-1/2 Y-w resonance resulting from a bound state in the KN system. The position and width of the observed [Y*1] resonance agree with both theories but since the spin and parity have not yet been determined, it is impossible at present to distinguish between the two theoretical interpretations.

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13 pages : illustrations

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Digitized from microopaque cards (1).

Includes bibliographic references (page 6)

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  • SuDoc Number: Y 3.At 7:22/UCRL-9675
  • Report No.: UCRL-9675
  • Accession or Local Control No: metadc1254667
  • Archival Resource Key: ark:/67531/metadc1254667

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  • April 25, 1961

Added to The UNT Digital Library

  • Feb. 5, 2022, 9:50 a.m.

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  • Jan. 24, 2023, 4:43 p.m.

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Alston, Margaret H.; Alvarez, Luis W., 1911-1988; Eberhard, Phillippe; Good, Myron L.; Graziano, William; Ticho, Harold K., 1921-2020 et al. The [Sigma/Alpha] Branching Ratio Of [Y*1], report, April 25, 1961; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc1254667/: accessed September 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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