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Mass difference of neutral K mesons

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Il Nuovo Cimento (1955-1965)

Summary

The mass difference ΔM between the K 01 and K 02 mesons has been investigated by producing K0 mesons and observing the K0 component of the K0-K0 admixture as a function of time. The K0’s were sampled by using the charge exchange process and detecting the resulting K- mesons. The best value for the mass difference is ΔM=1.9 ± 0.3ħ/τ1c2 where τ1 is the mean life of the K 01 . However, selected high mass-differences (ΔM > 10) are also consistent with the data.

Riassunto

Si sono studiate le difference di massa ΔM fra i mesoni K 01 e K 02 , producendo mesoni K0 ed osservando la componente K0 della miscela K0-K0 in funzione del tempo. Si campionarono i K0 servendosi del processo di scamMo di carioa e individuando i mesoni K- risultanti. Il miglior valore della differenza di massa è ΔM = (1.9±0.3)ħ/τ1c2 in oui τ1 è la vita media del K 01 . Tuttavia, alcune opportune elevate differenze di massa (ΔM >10) concordano con i dati.

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Authors and Affiliations

  1. Princeton University, Princeton, N. J.

    V. L. Fitch, P. A. Piroué & R. B. Perkins

  2. Los Alamos Scientific Laboratory, Los Alamos, N. Mex.

    R. B. Perkins

Authors
  1. V. L. Fitch
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  2. P. A. Piroué
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  3. R. B. Perkins
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Additional information

This work was supported by the joint program of the Office of Naval Research and the U. S. Atomic Energy Commission.

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Fitch, V.L., Piroué, P.A. & Perkins, R.B. Mass difference of neutral K mesons. Nuovo Cim 22, 1160–1170 (1961). https://doi.org/10.1007/BF02786891

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  • DOI: https://doi.org/10.1007/BF02786891

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