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K Leptonic Decay and Partially-Conserved Currents

Zweig, George (1963) K Leptonic Decay and Partially-Conserved Currents. Synchrotron Laboratory, CTSL-38. California Institute of Technology , Pasadena, CA. (Unpublished)

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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 K_2^0 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 K_2^0 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.

Item Type:Report or Paper (Technical Report)
Additional Information:© 1968 California Institute of Technology. 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.
Group:Synchrotron Laboratory
Funding AgencyGrant Number
Atomic Energy CommissionAT(11-1)-68
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Series Name:Synchrotron Laboratory
Issue or Number:CTSL-38
Record Number:CaltechAUTHORS:20180130-101235730
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84572
Deposited By: Joy Painter
Deposited On:01 Feb 2018 00:53
Last Modified:03 Oct 2019 19:20

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