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Note on anomalous K+-decay events

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Il Nuovo Cimento (1955-1965)

Summary

The π+-energy spectrum for the radiative ϑ+-decay mode is calculated and it is shown that that π+-energy spectrum has no peak at ∼ 60 MeV. Therefore there is no strong evidence to assert that two anomalous K+-decay events (with a π-secondary of about 60 MeV) are due more probably to the radiative ϑ+-decay mode than to a two body decay mode: K+ → π+ + X0, where X0 is a neutral boson with a mass of (500±5) times the electron mass.

Riassunto

Si calcola lo spettro di energia del π+ per il modo di decadimento radioattivo ϑ+, e si dimostra che tale spettro non ha alcun picco a ∼ 60 MeV. Non si hanno quindi elementi validi per affermare che i due eventi anomali di decadimento K+ (con un π secondario di circa 60 MeV) siano dovuti con maggiore probabilità al modo di decadimento radiativo ϑ+ piuttosto che al modo di decadimento in due particelle: K+ → π+ + X0, dove X0 è un bosone neutro di massa (500±5) volte la massa dell’elettrone.

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Hiida, K. Note on anomalous K+-decay events. Nuovo Cim 13, 1117–1121 (1959). https://doi.org/10.1007/BF02725122

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  • DOI: https://doi.org/10.1007/BF02725122

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