Summary
An event is described in which a fast singly charged particle, produces a star from which the only charged particles emitted are a negative K-meson and another particle of ∼ 1000 electronic masses. The interest of the event is due to the fact that this is the first case in which a mechanism of creation of a negative K-meson can be specified with a good degree of reliability. The event is shown to be in agreement with the selection rules resulting from associated production ideas.
Riassunto
Si descrive un evento nel quale una particella energica con carica unitaria produce una stella dalla quale i soli prodotti di disintegrazione carichi uscenti sono un mesone K negativo ed un’altra particella di circa 1 000 masse elettroniche. L’interesse dell’evento sta nel fatto che esso è il primo caso in cui si può specificare un meccanismo di creazione del mesone K negativo con un notevole grado di attendibilità. L’evento risulta in accordo colle regole di selezione derivanti dalle idee relative alla produzione associata.
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References
Observations on heavy meson secondaries. Universities of Bristol, Dublin Adv. Stud., Dublin Univ. Coll., Genova-Milano, Padova:Reports of the Pisa Conference, 1955.
M. W. Friedlander, D. Keefe andM. G. K. Menon:Nuovo. Cimento,2, 466 (1955).
M. W. Friedlander, Y. Fujimoto, D. Keefe andM. G. K. Menon:Nuovo Cimento,1, 90 (1955).
M. Ceccarelli, N. Dallaporta, M. Grilli, M. Ladu, M. Merlin, G. Salandin andB. Sechi:Reports of the Pisa Conference, 1955.
S. Biswas, B. Peters, F. A. Sc. andRama: private communication. Submitted to:The Proceedings of the Indian Academy of Sciences.
S. Biswas F. C. George, B. Peters andM. S. Swami:Suppl. Nuovo Cimento,12, 369 (1954).
Y. Goldschmidt-Clermont:Yuovo Cimento,7, 331 (1950).
E. Pickup andL. Voyvodic:Phys. Rev.,85, 91 (1952);M. Danysz, W. O. Lock andG. Yekutieli:Nature, (London),169, 364 (1952);R. R. Daniel, J. H. Davies, J. H. Mulvey andD. H. Perkins:Phil. Mag.,14, 753 (1952);M. Baldo, G. Belliboni, B. Sechi andG. T. Zorn:Suppl. Nuovo Cimento, 12, 220 (1954),Reports of Padua Conference.
Bristol Group: private communication.
M. Gell-Mann:Reports of the Pisa Conference;K. Nishijima:Progr. Theor. Phys.,12, 107 (1954).
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Event X was observed by Mr.G. Caltabiano and event Y by Mr.V. Chiaratti.
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Ceccarelli, M., Grilli, M., Merlin, M. et al. A probable example of the reaction: π−+p=K++K−+n. Nuovo Cim 2, 828–840 (1955). https://doi.org/10.1007/BF02725044
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DOI: https://doi.org/10.1007/BF02725044