Skip to main content
Log in

Production of hyperfragments from the interactions of 3.0 GeV/c and 5.0 GeV/c K mesons with emulsion nuclei

  • Published:
Il Nuovo Cimento A (1965-1970)

    We’re sorry, something doesn't seem to be working properly.

    Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.

Summary

A study has been made of the production of hyperfragments by the interactions of K-mesons of 3.0 and 5.0 GeV/c momentum in nuclear emulsion. The observed frequencies of production, (3.0±0.1)% and (2.2±0.1)% respectively, are significantly smaller than at lower K-meson momenta, while the range distributions show a relative increase in the number of hyperfragments of range greater than 5 µm. This increase is attributed to a larger contribution from the fragmentation process, which is especially significant at intermediate ranges [(10÷50) µm], and to greater mean ranges for the heavy hyperfragments, which broaden the peak at short ranges (⩽10 µm). The hyperfragments of range less than 10 µm are mainly heavy residual products of silver and bromine nuclei; their mass numbers differ on the average from those of the parent nuclei by about 30 and 35 nucleon masses for 3.0 and 5.0 GeV/c interactions respectively. Eight examples of π mesonic decays of heavy hyperfragments, and one probable example of a double hyperfragment, have been observed.

Riassunto

Si è studiata la produzione di iperframmenti nelle interazioni di mesoni K con impulso di 3.0 e 5.0 GeV/c in emulsioni nucleari. Le frequenze di produzione osservate, rispettivamente (3.0±0.1)% e (2.2±0.1)%, sono significativamente minori che a impulsi inferiori del mesone K, mentre le distribuzioni dei percorsi mostrano un relativo aumento del numero di iperframmenti di percorso maggiore di 5 µm. Si attribuisce questo aumento ad un maggiore contributo del processo di frammentazione, che è particolarmente significativo per percorsi intermedi [(10÷50) µm], e ai maggiori percorsi medi degli iperframmenti pesanti, che allargano il picco a percorsi brevi (⩽10µm). Gli iperframmenti con percorso inferiore a 10 µm sono principalmente residui pesanti dei nuclei di argento e bromo; i loro numeri di massa differiscono in media da quelli dei nuclei genitori di circa 30 e 35 masse nucleoniche rispettivamente per le interazioni di 3.0 e 5.0 GeV/c. Si sono osservati otto esempi di decadimenti π mesonici degli iperframmenti pesanti ed un probabile esempio di doppio iperframmento.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

Explore related subjects

Discover the latest articles and news from researchers in related subjects, suggested using machine learning.

References

  1. E. R. Fletcher, J. Lemonne, P. Renard, J. Sacton, D. O’Sullivan, T. P. Shah, A. Thompson, P. Allen, Sr.M. Heeran, A. Montwill, J. E. Allen, M. J. Beniston, D. A. Garbutt, R. C. Kumar, P. V. March, T. Pniewski andJ. Zakrzewski:Phys. Lett.,3, 280 (1963).

    Article  ADS  Google Scholar 

  2. J. Lemonne, C. Mayeur, J. Sacton, D. H. Davis, D. A. Garbutt andJ. E. Allen:Nuovo Cimento,34, 529 (1964).

    Article  Google Scholar 

  3. H. Henrotin, J. Lemonne, J. Sacton, D. H. Davis, M. A. Shaukat, J. E. Allen andM. M. Kasim:Phys. Lett.,15, 193 (1965).

    Article  ADS  Google Scholar 

  4. G. Baumann, J. P. Gerber, H. Braun andP. Cüer:Nuovo Cimento,34, 265 (1964).

    Article  Google Scholar 

  5. J. P. Lagnaux, J. Lemonne, J. Sacton, E. R. Fletcher, D. O’Sullivan, T. P. Shah, A. Thompson, P. Allen, Sr.M. Heeran, A. Montwill, J. E. Allen, D. H. Davis, D. A. Garbutt, V. A. Bull, P. V. March, M. Yaseen, T. Pniewski andJ. Zakrzewski:Nucl. Phys.,60, 97 (1964).

    Article  Google Scholar 

  6. In the case of the disintegrations of light hyperfragments produced in the absorption of K-mesons at rest, the frequency of such prongs and recoils is of the order of 30% and 15% respectively (4).

    Article  Google Scholar 

  7. W. Gajewski, J. Suchorzewska, M. F. Votruba andJ. Zakrzewski:Phys. Lett.,11, 177 (1964).

    Article  ADS  Google Scholar 

  8. I. Dostrowsky, P. Rabinowitz andR. Bivins:Phys. Rev.,111, 1659 (1958).

    Article  ADS  Google Scholar 

  9. M. W. Holland:Nuovo Cimento,32, 48 (1964).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Lemonne, J., Sacton, J., Schorochoff, G. et al. Production of hyperfragments from the interactions of 3.0 GeV/c and 5.0 GeV/c K mesons with emulsion nuclei. Nuovo Cimento A (1965-1970) 41, 235–248 (1966). https://doi.org/10.1007/BF02754535

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02754535

Keywords