Advertisement

Measurement of theΞ-p elastic cross section at 102 and 135 GeV/c

  • S. F. Biagi
  • M. Bourquin
  • A. J. Britten
  • R. M. Brown
  • H. Burckhart
  • A. A. Carter
  • J. R. Carter
  • Ch. Doré
  • P. Extermann
  • M. Gailloud
  • C. N. P. Gee
  • W. M. Gibson
  • J. C. Gordon
  • R. J. Gray
  • P. IgoKemenes
  • W. C. Louis
  • T. Modis
  • P. Muhlemann
  • J. Perrier
  • Ph. Rosselet
  • B. J. Saunders
  • P. Schirato
  • H. W. Siebert
  • V. J. Smith
  • D. P. Stickland
  • K. -P. Streit
  • J. J. Thresher
  • R. Weill
Article

Abstract

TheΞ-p differential elastic cross section has been measured in the SPS hyperon beam at 102 and 135 GeV/c. In the range 0.01<−<0.42(GeV/c)2, thet distributions are found to be compatible with the formA exp(Bt) whereB is 7.7±0.4(GeV/c)−2 at 102 GeV/c and 8.2 ±0.5(GeV/c)−2 at 135 GeV/c. The corresponding total elastic cross sections areσel=4.9±0.7 mb andσel=5.6±0.9 mb, respectively. These results are compared with the predictions of phenomenological models.

Keywords

Field Theory Elementary Particle Quantum Field Theory Particle Acceleration Phenomenological Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References and Footnote

  1. 1.
    J. Lach, L. Pondrom: Ann. Rev. Nucl. Part. Sci.29, 203 (1979)Google Scholar
  2. 2.
    S.F. Biagi et al.: Nucl. Phys.B186, 1 (1981)Google Scholar
  3. 3.
    J. Perrier: Ph.D. Thesis, University of Geneva (1983)Google Scholar
  4. 4.
    S.F. Biagi et al.: Z. Phys.C9, 305 (1981)Google Scholar
  5. 5.
    Y. Akimov et al.: Phys. Rev.D14, 3148 (1976)Google Scholar
  6. 6.
    M.G. Albrow et al.: Nucl. Phys.B108 1 (1976)Google Scholar
  7. 7.
    J.C.M. Armitage et al.: Nucl. Phys.B194, 365 (1982)Google Scholar
  8. 8.
    D.S. Ayres et al.: Phys. Rev.D15, 3105 (1977)Google Scholar
  9. 9.
    A. Schiz et al.: Phys. Rev.D24, 26 (1981); L.A. Fajardo et al.: Phys. Rev.D24, 46 (1981)Google Scholar
  10. 10.
    J.P. Burq et al.: Phys. Lett.109B, 124 (1982)Google Scholar
  11. 11.
    R. Carlitz et al.: Phys. Rev.D4, 3439 (1971)Google Scholar
  12. 12.
    Taking only the imaginary part of the non-spin flip amplitude into account, as Carlitz does for meson baryon scattering, we find the following slope relation att=0:\(\frac{{B(\Xi p) - B(pp)}}{{B(Kp) - B(\pi p)}} = \frac{{2(1 + r)}}{{1 - \varepsilon + 2r}}.\) The value ofr is estimated from the ratioσ T(Kp)/σ T(πp) [13] extrapolated to larges (≈1 TeV2) and is found to be 0.73 [14]. For ε, the experimental ratioσ T(Ξ - p)/σ T(pp yields 0.75 ±0.19 (in contradiction with the value −1/3 used by Carlitz). We set\(B(Kp) = \tfrac{1}{2}\left[ {B(K^ + p) + B(K^ - p)} \right] and B(\pi p) = \tfrac{1}{2}\left[ {B(\pi ^ + p) + B(\pi ^ - p)} \right]\) Google Scholar
  13. 13.
    A.S. Carroll et al.: Phys. Lett.61B, 303 (1976)Google Scholar
  14. 14.
    P. Extermann: In: New flavours and hadron spectroscopy. Proc. 16th Rencontre de Moriond, p. 393 (1981)Google Scholar
  15. 15.
    V. Barger et al.: Nucl. Phys.B88, 237 (1975)Google Scholar

Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • S. F. Biagi
    • 6
  • M. Bourquin
    • 3
  • A. J. Britten
    • 6
  • R. M. Brown
    • 7
  • H. Burckhart
    • 4
  • A. A. Carter
    • 6
  • J. R. Carter
    • 2
  • Ch. Doré
    • 5
  • P. Extermann
    • 3
  • M. Gailloud
    • 5
  • C. N. P. Gee
    • 7
  • W. M. Gibson
    • 1
  • J. C. Gordon
    • 7
  • R. J. Gray
    • 7
  • P. IgoKemenes
    • 4
  • W. C. Louis
    • 7
  • T. Modis
    • 3
  • P. Muhlemann
    • 3
  • J. Perrier
    • 3
  • Ph. Rosselet
    • 5
  • B. J. Saunders
    • 7
  • P. Schirato
    • 3
  • H. W. Siebert
    • 4
  • V. J. Smith
    • 1
  • D. P. Stickland
    • 1
    • 8
  • K. -P. Streit
    • 4
  • J. J. Thresher
    • 7
  • R. Weill
    • 5
  1. 1.H.H. Wills Physics LaboratoryUniversity of BristolUK
  2. 2.University of CambridgeUK
  3. 3.Université de GenèveSwitzerland
  4. 4.Physikalisches InstitutUniversität HeidelbergFRG
  5. 5.Université de LausanneSwitzerland
  6. 6.Oueen Mary CollegeUniversity of LondonUK
  7. 7.Rutherford Appleton LaboratoryUK
  8. 8.Princeton UniversityUSA

Personalised recommendations