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Title: Measurement of the absolute differential cross section of proton–proton elastic scattering at small angles

The differential cross section for proton-proton elastic scattering has been measured at a beam kinetic energy of 1.0 GeV and in 200 MeV steps from 1.6 to 2.8 GeV for centre-of-mass angles in the range from 12°-16° to 25°-30°, depending on the energy. A precision in the overall normalisation of typically 3% was achieved by studying the energy losses of the circulating beam of the COSY storage ring as it passed repeatedly through the windowless hydrogen target of the ANKE magnetic spectrometer. It is shown that the data have a significant impact upon the results of a partial wave analysis. Furthermore, after extrapolating the differential cross sections to the forward direction, the results are broadly compatible with the predictions of forward dispersion relations.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [4] ;  [4] ;  [4] ;  [6] ;  [7] ;  [8] ;  [4] ;  [9] ;  [4] ;  [4] ;  [10] ;  [11] ;  [12] more »;  [9] ;  [4] ;  [4] ;  [4] ;  [4] ;  [6] ;  [8] ;  [4] ;  [4] ;  [4] ;  [13] ;  [4] ;  [14] ;  [6] ;  [15] ;  [8] ;  [8] ;  [16] ;  [17] ;  [13] ;  [4] « less
  1. Tbilisi State Univ., Tbilisi (Georgia); Forschungszentrum Julich, Julich (Germany)
  2. JINR, Dubna (Russia); Petersburg Nuclear Physics Institute, Gatchina (Russia)
  3. Petersburg Nuclear Physics Institute, Gatchina (Russia)
  4. Forschungszentrum Julich, Julich (Germany)
  5. Forschungszentrum Julich, Julich (Germany); Chinese Academy of Sciences, Lanzhou (China)
  6. Univ. Munster, Munster (Germany)
  7. H. Niewodniczanski Institute of Nuclear Physics PAN, Krakow (Poland)
  8. JINR, Dubna (Russia)
  9. Tbilisi State Univ., Tbilisi (Georgia)
  10. Tbilisi State Univ., Tbilisi (Georgia); JINR, Dubna (Russia)
  11. JINR, Dubna (Russia); Forschungszentrum Julich, Julich (Germany)
  12. Forschungszentrum Julich, Julich (Germany); Petersburg Nuclear Physics Institute, Gatchina (Russia)
  13. George Washington Univ., Washington, D.C. (United States)
  14. High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia
  15. Forschungszentrum Rossendorf, Dresden (Germany); M.V. Lomonosov Moscow State Univ., Moscow (Russia)
  16. Petersburg Nuclear Physics Institute, Gatchina (Russia); Univ. Bonn, Bonn (Germany)
  17. UCL, London (United Kingdom)
Publication Date:
OSTI Identifier:
1262051
Grant/Contract Number:
FG02-99-ER41110
Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 755; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Tbilisi State Univ., Tbilsi (Georgia)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); Forschungszentrum Julich (COSY-FEE); Shota Rustaveli Science Foundation
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS proton-proton elastic scattering; differential cross section; nucleon-nucleon; intermediate energies; excitation-functions; analyzing power; pp; cosy