Skip to main content
SpringerLink
Log in

The pionic hydrogen experiment at PSI

  • Contributions
  • Published:
Czechoslovak Journal of Physics Aims and scope

Abstract

A new high-precision determination of the strong-interaction shift (∈1s) and broadening (Γ1s) of the ground state in pionic hydrogen (πH) has been started at PSI. This constitutes a direct measurement of the πN scattering lengths and is an important test of the methods of chiral perturbation theory.

The experiment will be conducted in two steps. In the first step we aim for a precision of 0.2% for ∈1s and 3% for Γ1s. A new method of energy calibration is used: by measuring πH simultaneously with pionic oxygen (πO), systematic errors are suppressed. The goal for the second step is an accuracy of 1% for Γ1s.

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. S. Deser et al.: Phys. Rev. 96 (1954) 774.

    Article  ADS  Google Scholar 

  2. V. E. Lyubovitskij and A. Rusetsky: Phys. Lett. B 494 (2000) 9.

    Article  ADS  Google Scholar 

  3. Proc. of MENU '99, Zuoz, Switzerland, 1999, πN Newsletter 15 (1999), and references therein.

  4. H.-Ch. Schröder et al.: Eur. Phys. J. C 21 (2001) 433.

    ADS  Google Scholar 

  5. P. Hauser et al.: Phys. Rev. C 58 (1998) R1869.

    Article  ADS  Google Scholar 

  6. T. E. O. Ericson, B. Loiseau, and A. W. Thomas: Phys. Scr. T87 (2000) 71.

    Article  ADS  Google Scholar 

  7. S. Weinberg: Phys. Rev. Lett. 17 (1966) 616; Y. Tomozawa, Nuovo Cim. A 46 (1966) 707.

    Article  ADS  Google Scholar 

  8. N. Fettes, U.-G. Meissner, and S. Steininger: Nucl. Phys. A 640 (1998) 199.

    Article  ADS  Google Scholar 

  9. R. Koch and E. Pietarinen: Nucl. Phys. A 336 (1980) 331; R. Koch: Nucl. Phys. a 480 (1986) 707.

    Article  ADS  Google Scholar 

  10. PSI experiment R-98.01; http://pihydrogen.web.psi.ch.

  11. N. Nelms et al.: to be published in Nucl. Instr. Meth.

  12. S. Jonsell, J. Wallenius, and P. Froelich: Phys. Rev. A 59 (1999) 3440.

    Article  ADS  Google Scholar 

  13. V. M. Markushin and T. S. Jensen: in Proc. μCF01, Shimoda, Japan, April 22–26, 2001, to be published in Hyperfine Interactions.

  14. D. Hitz et al.: Rev. Sci. Instr. 2000.

  15. S. Biri, L. Simons, and D. Hitz: in Proc. CERIS'99, CERN, 1999, p. 58.

Download references

Author information

Authors and Affiliations

  1. Institut für Kernphysik, Forschungszentrum Jülich, D-52425, Jülich

    D. Gotta & M. Hennebach

  2. Paul-Scherrer-Institut (PSI), CH-5232, Villigen, Switzerland

    Y. -W. Liu, V. Markushin & L. M. Simons

  3. IMEP, Österreichische Akademie der Wissenschaften, A-1090, Vienna, Austria

    H. Fuhrmann, A. Gruber & J. Zmeskal

  4. Laboratoire Kastler-Brossel, Université Pierre et Marie Curie, F-75252, Paris, France

    P. Indelicato & B. Manil

  5. Department of Material Science, University of Ioannina, GR-45110, Ioannina, Greece

    D. Anagnostopoulos

  6. Dept. of Physics and Astronomy, University of Leicester, LEI7RH, Leicester, England

    N. Nelms

Authors
  1. D. Gotta
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Hennebach
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Y. -W. Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. V. Markushin
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. L. M. Simons
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. H. Fuhrmann
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. A. Gruber
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. J. Zmeskal
    View author publications

    You can also search for this author in PubMed Google Scholar

  9. P. Indelicato
    View author publications

    You can also search for this author in PubMed Google Scholar

  10. B. Manil
    View author publications

    You can also search for this author in PubMed Google Scholar

  11. D. Anagnostopoulos
    View author publications

    You can also search for this author in PubMed Google Scholar

  12. N. Nelms
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Talk given at the XIVth Summer School “Understanding the Structure of Hadrons”, Prague (Czech Republic), July 9–13, 2001.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Gotta, D., Hennebach, M., Liu, Y.W. et al. The pionic hydrogen experiment at PSI. Czech J Phys 52 (Suppl 2), B169–B174 (2002). https://doi.org/10.1007/s10582-002-0083-3

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10582-002-0083-3

PACS

Key words

Search

Navigation