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Isotopic Spin and New Unstable Particles

Gell-Mann, M. (1953) Isotopic Spin and New Unstable Particles. Physical Review, 92 (3). pp. 833-834. ISSN 0031-899X. doi:10.1103/PhysRev.92.833.

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Peaslee has considered the interesting possibility that the principle of charge independence, now believed to hold for nucleons and pions, may extend to the new unstable particles as well. In order to discuss this suggestion, let us suppose that both "ordinary particles" (nucleons and pions) and "new unstable particles" (Vq, V4, τ, etc.) have interactions of three kinds: (i) Interactions that rigorously conserve isotopic spin. (We assume these to be strong.) (ii) Electromagnetic interactions. (Let us include mass-difference effects in this category.) (iii) Other charge-dependent interactions, which we take to be very weak.

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Additional Information:© 1953 American Physical Society. Received August 21, 1953.
Issue or Number:3
Record Number:CaltechAUTHORS:20150924-084901419
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Official Citation:Isotopic Spin and New Unstable Particles M. Gell-Mann Phys. Rev. 92, 833 (1953) - Published 1 November 1953
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60471
Deposited By: Ruth Sustaita
Deposited On:24 Sep 2015 23:55
Last Modified:10 Nov 2021 22:34

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