Skip to main content
SpringerLink
Log in

Coulomb interference in the pion-proton scattering at 120 MeV

  • Published:
Il Nuovo Cimento (1955-1965)

Summary

A complete angular distribution for the positive pion-proton elastic scattering at 120 MeV is presented. The angular distribution deals with angles in the c.m. between 15° and 180° and is based on 545 events found in p.p. The analysis of the differential cross-section for angles >30° gives as phase shifts for the partial waves,p 3/2,p 1/2 α3 = ∓ 12°,2 α33 = ± 31°.4 α31 = ∓ 1°.5. The choice of the sign of the phase shifts is based on the frequency of the events in the angular interval 15°÷30°. The present experiment gives evidence for the upper system of signs: the relative probability of the two systems of signs being 18.

Riassunto

In questo lavoro viene presentata una distribuzione angolare completa per il fenomeno di diffusione elastica pione positivo-protone a 120 MeV. La distribuzione interessa angoli nel c.m. che vanno tra 15° e 180° ed è basata su 545 eventi trovati in lastre fotografiche. L’analisi della sezione d’urto differenziale per angoli >30° in termini di sfasamento delle onde parziali,s, p 3/2,p 1/2, porta ai valori seguenti α3 = ∓ 12°,2 α33 = ± 31°.4 α31 = ∓ 1°.5. La scelta del segno delle fasi è fondata sulla frequenza degli eventi nell’intervallo angolare 15°÷30°. Il presente esperimento dà evidenza per il sistema superiore di segni: la probabilità relativa dei due sistemi di segni è 18.

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

Access this article

Log in via an institution

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

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. E. H. Henley, M. A. Ruderman andJ. Steinberger:Ann. Rev. Nucl. Science,3, 1 (1953);M. Gell-Mann andK. Watson:Ann. Rev. Nucl. Science,4, 219 (1954);E. Fermi:Lectures on the pions and nucleons, inNuovo Cimento, to be published.

    Article  ADS  Google Scholar 

  2. I. P. Perry andC. E. Angell:Phys. Rev.,91, 1289 (1953).

    Article  ADS  Google Scholar 

  3. D. Bodansky, A. Sachs andJ. Steinberger:Phys. Rev.,90, 996, 997 (1953).

    Article  ADS  Google Scholar 

  4. J. Orear:Phys. Rev.,96, 1417 (1954).

    Article  ADS  Google Scholar 

  5. J. J. Lord andA. B. Weaver: Private communication.

  6. Carnegie Tech. Group: Private communication.

  7. H. Anderson:Proc. 5-th Rochester Conference.

  8. E. C. Fowler, W. B. Fowler, R. P. Shutt, A. M. Thorndike andW. L. Whittemore:Phys. Rev.,86, 1053 (1952);A. Minguzzi, G. Puppi andA. Ranzi:Nuovo Cimento,10, 1753 (1953);J. Orear, J. J. Lord andA. B. Weaver:Phys. Rev.,93, 575 (1954);G. Home, G. Goldhaber andL. N. Lederman:Phys. Rev.,93, 554 (1954).

    Article  ADS  Google Scholar 

  9. Thanks to the interest taken by ProfessorM. Schein and to the kind collaboration on the part of DoctorsD. Hashkin andJ. Orear.

  10. G. Goldhaber:Phys. Rev.,89, 1187 (1953).

    Article  ADS  Google Scholar 

  11. J. Ashkin andS. H. Vosko:Phys. Rev.,91, 1248 (1953).

    Article  ADS  Google Scholar 

  12. F. T. Solmitz:Phys. Rev.,94, 1799 (1954).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Istituto di Fisica dell’Università, Bologna

    L. Ferretti, E. Manaresi, G. Puppi & A. Ranzi

  2. Istituto di Fisica dell’Università, Padova

    G. Quareni

  3. Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Italy

    G. Quareni

Authors
  1. L. Ferretti
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. E. Manaresi
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. G. Puppi
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. A. Ranzi
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. G. Quareni
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

A preliminary account of this work was given at the5 th Rochester Conference on High Energy Nuclear Physics.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Ferretti, L., Manaresi, E., Puppi, G. et al. Coulomb interference in the pion-proton scattering at 120 MeV. Nuovo Cim 1, 1238–1250 (1955). https://doi.org/10.1007/BF02731426

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02731426

Search

Navigation