Measurement of antiproton-proton small-angle elastic scattering at low momentum

L Linssen; C.I Beard; R Birsa; K Bos; F Bradamante; D.V Bugg; A.S Clough; S.Dalla Torre-Colautti; M Giorgi; J.R Hall; J.C Kluyver; R.A Kunne; C Lechanoine-Leluc; A Martin; Y Onel; A Penzo; D Rapin; P Schiavon; R.L Shypit; A Villari

doi:10.1016/0375-9474(87)90023-6

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Measurement of antiproton-proton small-angle elastic scattering at low momentum

Journal article

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Measurement of antiproton-proton small-angle elastic scattering at low momentum

L Linssen, C.I Beard, R Birsa, K Bos, F Bradamante, D.V Bugg, A.S Clough, S.Dalla Torre-Colautti, M Giorgi, J.R Hall, …

Nuclear physics. A, Vol.469(4), pp.726-748

1987

DOI: 10.1016/0375-9474(87)90023-6

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Abstract

Two high statistics measurements of antiproton-proton small-angle elastic scattering, at p = 233 MeV/ c and p = 272 MeV/ c, are presented. The measurements were carried out at the LEAR facility at CERN. By the Coulomb-nuclear interference method, values are obtained for the real-to-imaginary ratio ρ of the p̄p forward nuclear scattering amplitude and for its exponential slope b: ρ = + 0.041 ± 0.026 and b = 71.5 ± 4.5 (GeV/ c) −2 at 233 MeV/ c and ρ = −0.014 ± 0.027 and b = 47.7 ± 2.7 (GeV/ c) −2 at 272 MeV/ c. The method to derive these values is discussed in detail and so are the uncertainties contributing to their systematic error. The results are compared with predictions from forward dispersion relation calculations and with predictions from p̄p potential models.

Details

Title: Subtitle: Measurement of antiproton-proton small-angle elastic scattering at low momentum
Creators: L Linssen - NIKHEF-H, Amsterdam, The Netherlands
C.I Beard - Queen Mary University of London
R Birsa - University of Trieste
K Bos - NIKHEF-H, Amsterdam, The Netherlands
F Bradamante - University of Trieste
D.V Bugg - Queen Mary University of London
A.S Clough - University of Surrey
S.Dalla Torre-Colautti - University of Trieste
M Giorgi - University of Trieste
J.R Hall - Queen Mary University of London
J.C Kluyver - NIKHEF-H, Amsterdam, The Netherlands
R.A Kunne - NIKHEF-H, Amsterdam, The Netherlands
C Lechanoine-Leluc - University of Geneva
A Martin - University of Trieste
Y Onel - University of Geneva
A Penzo - University of Trieste
D Rapin - University of Geneva
P Schiavon - University of Trieste
R.L Shypit - University of Surrey
A Villari - University of Trieste
Resource Type: Journal article
Publication Details: Nuclear physics. A, Vol.469(4), pp.726-748
DOI: 10.1016/0375-9474(87)90023-6
ISSN: 0375-9474
Publisher: Elsevier B.V
Language: English
Date published: 1987
Academic Unit: Physics and Astronomy
Record Identifier: 9984199844402771

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