Summary
The mean cascade times of both K−-mesons and Σ−-hyperons in their captures at rest in liquid helium have been determined to be (3.1±0.4) · 10−10 s and less than 3.6 · 10−11 s (with a confidence level of 90%) respectively. The finding of a much lower mean cascade time for Σ−-hyperons than for K−-mesons lends weight to the hypothesis of trapping of negative hadrons in metastable orbits in helium.
Riassunto
Si è determinato che i tempi medi di decadimento dei mesoni K− e degli iperoni Σ− quando sono catturati in quiete in elio liquido sono (3.1±0.4) · 10−10 s e meno di 3.6 · 10−11 s (con un grado di affidabilità del 90%), rispettivamente. I risultati relativi a tempi medi di decadimento molto più piccoli per iperoni Σ− che per i mesoni K− dà peso all’ipotesi che vi sia cattura di adroni negativi in orbite metastabili in elio.
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Literatur
T. B. Day:Nuovo Cimento,18, 381 (1960).
J. G. Fetkovich andE. G. Pewitt:Phys. Rev. Lett.,11, 290 (1963).
M. M. Block, T. Kikuchi, D. Koetke, J. Kopelman, C. R. Sun, R. Walker, G. Culligan, V. L. Telegdi andR. Winston:Phys. Rev. Lett.,11, 301 (1963); and alsoPhys. Rev.,140, B 143 (1963).
M. M. Block, J. B. Kopelman andC. R. Sun:Phys. Rev.,140, B 143 (1965).
J. G. Fetkovich, J. McKenzie, B. R. Riley, I. T. Wang, G. S. Keyes, M. Derrick, T. H. Fields andL. G. Hyman:Phys. Rev. D,2, 1803 (1970).
G. R. Burleson, D. Cohen, R. C. Lamb, D. N. Michael, R. A. Schluter andT. O. White:Phys. Rev. Lett.,15, 70 (1965).
D. N. Michael:Phys. Rev.,158, 1343 (1967).
G. T. Condo:Phys. Lett.,9, 65 (1964).
J. E. Russell:Phys. Rev. Lett.,23, 63 (1969).
J. E. Russell:Phys. Rev.,188, 187 (1969).
J. G. Fetkovich, B. R. Riley andI. T. Wang:Phys. Lett.,35 B, 178 (1971).
J. G. Fetkovich, J. McKenzie, B. R. Riley andI. T. Wang: to be published.
R. J. Walker, M. M. Block, I. R. Kenyon, D. Koetke, J. Keren, P. Malhotra, P. Mazur andH. Winzeler:Rev. Sci. Inst.,39, 1407 (1968).
Further details of this correction may be found in ref. (14).
J. Gordon, R. Roosen andC. Vander Velde-Wilquet:Bulletin of the Inter-University Institute for High Energies, Brussels, Belgium IIHE 74/2 (1974).
P. A. Katz, K. Bunnell, M. Derrick, T. Fields, L. G. Hyman andG. Keyes:Phys. Rev. D,1, 1267 (1970).
Particle Data Group:Rev. Mod. Phys.,45, No. 2, Part II (1973).
H. O. Cohn andK. H. Bhatt:Phys. Rev. Lett.,13, 668 (1964).
M. Derrick, T. Fields, L. G. Hyman, G. Keyes, J. Fetkovich, J. McKenzie andI. T. Wang:Phys. Rev. A,2, 7 (1970).
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Comber, C., Davis, D.H., Gordon, J. et al. The orbital capture of K−-mesons and Σ−-hyperons in liquid helium. Nuov Cim A 24, 294–300 (1974). https://doi.org/10.1007/BF02821996
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DOI: https://doi.org/10.1007/BF02821996