Effect of pion external distortion on low-energy pion double charge exchange

M. Kh Khankhasayev; H. Sarafian; Mikkel B. Johnson; Zh B. Kurmanov

doi:10.1103/PhysRevC.50.1424

Effect of pion external distortion on low-energy pion double charge exchange

M. Kh Khankhasayev, H. Sarafian, Mikkel B. Johnson, Zh B. Kurmanov

Penn State York

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5 Scopus citations

Abstract

We simplify a treatment of pion distortions using a separable expansion of optical potential in momentum space. We use this method to gain insight into the role of distortions in isoelastic pion charge-exchange scattering within the framework of the isospin-invariant optical model. The method provides an analytic procedure for calculating external distortions for single- and double-charge-exchange scattering. This allows us to analyze separately the role of on- and off-shell pions in distortions for each partial wave. Results for sequential scattering at 50 MeV for the reaction C14(+, -)14 O are presented. It is shown that the external distortions give a small enhancement in forward directions and reduce the differential cross sections at large angles.

Original language	English (US)
Pages (from-to)	1424-1435
Number of pages	12
Journal	Physical Review C
Volume	50
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.50.1424
State	Published - Jan 1 1994

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.50.1424

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abstract = "We simplify a treatment of pion distortions using a separable expansion of optical potential in momentum space. We use this method to gain insight into the role of distortions in isoelastic pion charge-exchange scattering within the framework of the isospin-invariant optical model. The method provides an analytic procedure for calculating external distortions for single- and double-charge-exchange scattering. This allows us to analyze separately the role of on- and off-shell pions in distortions for each partial wave. Results for sequential scattering at 50 MeV for the reaction C14(+, -)14 O are presented. It is shown that the external distortions give a small enhancement in forward directions and reduce the differential cross sections at large angles.",

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AU - Khankhasayev, M. Kh

AU - Sarafian, H.

AU - Johnson, Mikkel B.

AU - Kurmanov, Zh B.

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N2 - We simplify a treatment of pion distortions using a separable expansion of optical potential in momentum space. We use this method to gain insight into the role of distortions in isoelastic pion charge-exchange scattering within the framework of the isospin-invariant optical model. The method provides an analytic procedure for calculating external distortions for single- and double-charge-exchange scattering. This allows us to analyze separately the role of on- and off-shell pions in distortions for each partial wave. Results for sequential scattering at 50 MeV for the reaction C14(+, -)14 O are presented. It is shown that the external distortions give a small enhancement in forward directions and reduce the differential cross sections at large angles.

AB - We simplify a treatment of pion distortions using a separable expansion of optical potential in momentum space. We use this method to gain insight into the role of distortions in isoelastic pion charge-exchange scattering within the framework of the isospin-invariant optical model. The method provides an analytic procedure for calculating external distortions for single- and double-charge-exchange scattering. This allows us to analyze separately the role of on- and off-shell pions in distortions for each partial wave. Results for sequential scattering at 50 MeV for the reaction C14(+, -)14 O are presented. It is shown that the external distortions give a small enhancement in forward directions and reduce the differential cross sections at large angles.

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Effect of pion external distortion on low-energy pion double charge exchange

Abstract

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