Energy dependence of two-nucleon pion absorption on O16

S. D. Hyman, D. J. MacK, P. G. Roos, H. Breuer, N. S. Chant, F. Khazaie, Barry Ritchie, J. D. Silk, G. S. Kyle, P. A. Amaudruz, C. H Q Ingram, D. Renker, R. A. Schumacher, U. Sennhauser, Th S. Bauer, W. J. Burger

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Inclusive O16(π+,p) and exclusive O16(π+,2p) data are presented for 115 MeV and 165 MeV pions. Using a combination of distorted-wave impulse approximation (DWIA) calculations for two-nucleon absorption and phase space simulations for more complicated processes, the data are fit and the total direct two-nucleon absorption cross sections are extracted. These cross sections fall faster with energy than π+d→pp. The DWIA calculations were used to calculate the effects of final state interactions (FSI). After correcting for FSI, the two-nucleon absorption process is found to dominate at 115 MeV, becoming less important as the incident energy increases to 165 MeV. The decrease with energy in the two-nucleon fraction of the total absorption cross section is found to be in remarkably good agreement with theoretical predictions.

Original languageEnglish (US)
Pages (from-to)1184-1199
Number of pages16
JournalPhysical Review C
Volume47
Issue number3
DOIs
StatePublished - 1993
Externally publishedYes

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pions
absorption cross sections
impulses
approximation
energy
interactions
cross sections
predictions
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Hyman, S. D., MacK, D. J., Roos, P. G., Breuer, H., Chant, N. S., Khazaie, F., ... Burger, W. J. (1993). Energy dependence of two-nucleon pion absorption on O16. Physical Review C, 47(3), 1184-1199. https://doi.org/10.1103/PhysRevC.47.1184

Energy dependence of two-nucleon pion absorption on O16. / Hyman, S. D.; MacK, D. J.; Roos, P. G.; Breuer, H.; Chant, N. S.; Khazaie, F.; Ritchie, Barry; Silk, J. D.; Kyle, G. S.; Amaudruz, P. A.; Ingram, C. H Q; Renker, D.; Schumacher, R. A.; Sennhauser, U.; Bauer, Th S.; Burger, W. J.

In: Physical Review C, Vol. 47, No. 3, 1993, p. 1184-1199.

Research output: Contribution to journalArticle

Hyman, SD, MacK, DJ, Roos, PG, Breuer, H, Chant, NS, Khazaie, F, Ritchie, B, Silk, JD, Kyle, GS, Amaudruz, PA, Ingram, CHQ, Renker, D, Schumacher, RA, Sennhauser, U, Bauer, TS & Burger, WJ 1993, 'Energy dependence of two-nucleon pion absorption on O16', Physical Review C, vol. 47, no. 3, pp. 1184-1199. https://doi.org/10.1103/PhysRevC.47.1184
Hyman SD, MacK DJ, Roos PG, Breuer H, Chant NS, Khazaie F et al. Energy dependence of two-nucleon pion absorption on O16. Physical Review C. 1993;47(3):1184-1199. https://doi.org/10.1103/PhysRevC.47.1184
Hyman, S. D. ; MacK, D. J. ; Roos, P. G. ; Breuer, H. ; Chant, N. S. ; Khazaie, F. ; Ritchie, Barry ; Silk, J. D. ; Kyle, G. S. ; Amaudruz, P. A. ; Ingram, C. H Q ; Renker, D. ; Schumacher, R. A. ; Sennhauser, U. ; Bauer, Th S. ; Burger, W. J. / Energy dependence of two-nucleon pion absorption on O16. In: Physical Review C. 1993 ; Vol. 47, No. 3. pp. 1184-1199.
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AU - Roos, P. G.

AU - Breuer, H.

AU - Chant, N. S.

AU - Khazaie, F.

AU - Ritchie, Barry

AU - Silk, J. D.

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AU - Amaudruz, P. A.

AU - Ingram, C. H Q

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AU - Bauer, Th S.

AU - Burger, W. J.

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AB - Inclusive O16(π+,p) and exclusive O16(π+,2p) data are presented for 115 MeV and 165 MeV pions. Using a combination of distorted-wave impulse approximation (DWIA) calculations for two-nucleon absorption and phase space simulations for more complicated processes, the data are fit and the total direct two-nucleon absorption cross sections are extracted. These cross sections fall faster with energy than π+d→pp. The DWIA calculations were used to calculate the effects of final state interactions (FSI). After correcting for FSI, the two-nucleon absorption process is found to dominate at 115 MeV, becoming less important as the incident energy increases to 165 MeV. The decrease with energy in the two-nucleon fraction of the total absorption cross section is found to be in remarkably good agreement with theoretical predictions.

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