Summary
In this paper are given the results of measurements on secondaries of K-particles found in stacks of stripped emulsions exposed at high altitude from Sardinia 1953. Among the 8 secondaries, one has been identified as a π-meson, one as a μ-meson. The other 6 form a group whose ionization is near the plateau and whosepβ is about 200 MeV/c. The K-particle with π-meson secondary can be classed as a χ-meson, that with an identified μ secondary is probably a ℵ. The remaining 6 second-aries can be interpreted as the products of the Kμ decay, and the mass of the Kμ can be determined from their meanpβ. The methods of measurement and some possible sources of error are discussed critically.
Riassunto
Si presentano i risultati di misure su secondari di mesoni K trovati nei pacchi di emulsioni pellicolate esposte ad alta quota in Sardegna nel 1953. Tra gli 8 secondari uno è stato identificato come un mesone π, uno come mesone μ e gli altri 6 formano un gruppo avente ionizzazione vicina al plateau epβ intorno a 200 MeV/c. La particella K avente come secondario un mesone π si può attribuire al tipo χ, quella avente come secondario un mesone μ identificato, appartiene probabilmente al tipo ℵ. Gli altri 6 secondari si possono interpretare come i prodotti della disintegrazione del mesone Kμ e dal loropβ medio di può determinare la massa di questa particella. Nel corso del lavoro vengono discussi criticamente i metodi di misura e alcune possibilità di errore e ambiguità.
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Bonetti, A., Levi Setti, R., Locatelli, B. et al. Results on some secondary particles of K-mesons from the stacks flown in sardinia 1953. Nuovo Cim 1, 904–914 (1955). https://doi.org/10.1007/BF02731336
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DOI: https://doi.org/10.1007/BF02731336