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K-leptonic decay and partially conserved currents

Zweig, George (1963) K-leptonic decay and partially conserved currents. Physical Review, 130 (6). pp. 2449-2454. ISSN 0031-899X. doi:10.1103/PhysRev.130.2449.

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An operational definition for the partial conservation of the strangeness-changing vector current is given and applied to leptonic K+ and K20 decay. The K* resonance is explicitly included in the calculation and quantitative agreement with experiment is obtained. A detailed comparison with the K+ data of Brown et al. and Dobbs et al. is given. Because of rapid variations of a form factor, it is found that the data of these two groups are not in contradiction. From the K20 experiment of Luers et al., I=1/2 and 3/2 currents are seen to exist. Λβ decay is briefly considered. It is found that an explanation for the slowness of K leptonic decay and the vector part of Λβ decay may be connected with the partial conservation of the strangeness-changing vector current.

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Additional Information:©1963 The American Physical Society. Received 7 February 1963. It is a pleasure to thank Professor Murray Gell-Mann for innumerable comments and criticisms. The author would also like to thank Professor Alvin Tollestrup for conversations regarding experimental aspects of the problem, along with Dr. George Trilling who has kindly supplied the data from the experiment of Brown et al.
Issue or Number:6
Record Number:CaltechAUTHORS:ZWEpr63
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5617
Deposited By: Tony Diaz
Deposited On:26 Oct 2006
Last Modified:08 Nov 2021 20:27

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