Measurements of the antiproton-proton elastic cross section in the beam momentum range between 180 and 600 MeV/c

W. Brückner; B. Cujec; H. Döbbeling; K. Dworschak; H. Kneis; S. Majewski; M. Nomachi; S. Paul; B. Povh; R. D. Ransome; T. A. Shibata; M. Treichel; Th Walcher

doi:10.1007/BF01560639

Measurements of the antiproton-proton elastic cross section in the beam momentum range between 180 and 600 MeV/c

W. Brückner, B. Cujec, H. Döbbeling, K. Dworschak, H. Kneis, S. Majewski, M. Nomachi, S. Paul, B. Povh, R. D. Ransome, T. A. Shibata, M. Treichel, Th Walcher

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Abstract

The differential cross section for antiproton-proton elastic scattering has been measured for the beam momenta between 180 and 600 MeV/c. The real-to-imaginary ratio of the forward elastic scattering amplitude is derived from the Coulomb-nuclear interference. The ratio is found to be close to zero between 180 and 500 MeV/c with a minimum of ρ=-0.14 at 260 MeV/c. This result is contrary to model predictions. The phase shifts for the s-, p- and d-waves are extracted. The partial wave compositions of the elastic and inelastic cross sections have been determined. A large contribution of the p-wave is identified in the antiproton-proton interactions at small momenta.

Original language	English (US)
Pages (from-to)	367-377
Number of pages	11
Journal	Zeitschrift für Physik A Hadrons and Nuclei
Volume	339
Issue number	3
DOIs	https://doi.org/10.1007/BF01560639
State	Published - Sep 1991

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Keywords

11.80.Et
13.75.Cs

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10.1007/BF01560639

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Brückner, W., Cujec, B., Döbbeling, H., Dworschak, K., Kneis, H., Majewski, S., Nomachi, M., Paul, S., Povh, B., Ransome, R. D., Shibata, T. A., Treichel, M., & Walcher, T. (1991). Measurements of the antiproton-proton elastic cross section in the beam momentum range between 180 and 600 MeV/c. Zeitschrift für Physik A Hadrons and Nuclei, 339(3), 367-377. https://doi.org/10.1007/BF01560639

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title = "Measurements of the antiproton-proton elastic cross section in the beam momentum range between 180 and 600 MeV/c",

abstract = "The differential cross section for antiproton-proton elastic scattering has been measured for the beam momenta between 180 and 600 MeV/c. The real-to-imaginary ratio of the forward elastic scattering amplitude is derived from the Coulomb-nuclear interference. The ratio is found to be close to zero between 180 and 500 MeV/c with a minimum of ρ=-0.14 at 260 MeV/c. This result is contrary to model predictions. The phase shifts for the s-, p- and d-waves are extracted. The partial wave compositions of the elastic and inelastic cross sections have been determined. A large contribution of the p-wave is identified in the antiproton-proton interactions at small momenta.",

keywords = "11.80.Et, 13.75.Cs",

author = "W. Br{\"u}ckner and B. Cujec and H. D{\"o}bbeling and K. Dworschak and H. Kneis and S. Majewski and M. Nomachi and S. Paul and B. Povh and Ransome, {R. D.} and Shibata, {T. A.} and M. Treichel and Th Walcher",

year = "1991",

month = sep,

doi = "10.1007/BF01560639",

language = "English (US)",

volume = "339",

pages = "367--377",

journal = "Zeitschrift f{\"u}r Physik A Hadrons and Nuclei",

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Brückner, W, Cujec, B, Döbbeling, H, Dworschak, K, Kneis, H, Majewski, S, Nomachi, M, Paul, S, Povh, B, Ransome, RD, Shibata, TA, Treichel, M & Walcher, T 1991, 'Measurements of the antiproton-proton elastic cross section in the beam momentum range between 180 and 600 MeV/c', Zeitschrift für Physik A Hadrons and Nuclei, vol. 339, no. 3, pp. 367-377. https://doi.org/10.1007/BF01560639

TY - JOUR

T1 - Measurements of the antiproton-proton elastic cross section in the beam momentum range between 180 and 600 MeV/c

AU - Brückner, W.

AU - Cujec, B.

AU - Döbbeling, H.

AU - Dworschak, K.

AU - Kneis, H.

AU - Majewski, S.

AU - Nomachi, M.

AU - Paul, S.

AU - Povh, B.

AU - Ransome, R. D.

AU - Shibata, T. A.

AU - Treichel, M.

AU - Walcher, Th

PY - 1991/9

Y1 - 1991/9

N2 - The differential cross section for antiproton-proton elastic scattering has been measured for the beam momenta between 180 and 600 MeV/c. The real-to-imaginary ratio of the forward elastic scattering amplitude is derived from the Coulomb-nuclear interference. The ratio is found to be close to zero between 180 and 500 MeV/c with a minimum of ρ=-0.14 at 260 MeV/c. This result is contrary to model predictions. The phase shifts for the s-, p- and d-waves are extracted. The partial wave compositions of the elastic and inelastic cross sections have been determined. A large contribution of the p-wave is identified in the antiproton-proton interactions at small momenta.

AB - The differential cross section for antiproton-proton elastic scattering has been measured for the beam momenta between 180 and 600 MeV/c. The real-to-imaginary ratio of the forward elastic scattering amplitude is derived from the Coulomb-nuclear interference. The ratio is found to be close to zero between 180 and 500 MeV/c with a minimum of ρ=-0.14 at 260 MeV/c. This result is contrary to model predictions. The phase shifts for the s-, p- and d-waves are extracted. The partial wave compositions of the elastic and inelastic cross sections have been determined. A large contribution of the p-wave is identified in the antiproton-proton interactions at small momenta.

KW - 11.80.Et

KW - 13.75.Cs

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U2 - 10.1007/BF01560639

DO - 10.1007/BF01560639

M3 - Article

AN - SCOPUS:0001584241

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SP - 367

EP - 377

JO - Zeitschrift für Physik A Hadrons and Nuclei

JF - Zeitschrift für Physik A Hadrons and Nuclei

IS - 3

ER -

Measurements of the antiproton-proton elastic cross section in the beam momentum range between 180 and 600 MeV/c

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