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UBC Theses and Dissertations
Simple pion-nucleon and pion-nucleus potentials with applications of the doorway model to pion-nucleus scattering Rowe, Glenn William
Abstract
The pion-nucleon total cross section is reproduced in the pion kinetic energy range of zero to 250 MeV by a simple Yukawa potential with the depth.and width as free parameters. This potential is then averaged over a nuclear matter distribution in an attempt to produce a pion-nucleus potential for pion-¹²C scattering. The model is explored by varying several parameters in the potential and observing their effect on the differential cross section for pion-12C scattering with the pion kinetic energy equal to 50 MeV. No completely satisfactory fit to the data is found. It is suggested that treating this system as a pion-nucleon system interacting in the average field of the residual nucleus may give better results and some ideas are presented as to how this might be done. Applications of such a treatment of pion-nucleus interactions to the description of pion-nucleus "doorway" states (so far, apart from the N*, unobserved) are discussed.
Item Metadata
Title |
Simple pion-nucleon and pion-nucleus potentials with applications of the doorway model to pion-nucleus scattering
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1977
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Description |
The pion-nucleon total cross section is reproduced in the pion kinetic energy range of zero to 250 MeV by a simple Yukawa potential with the depth.and width as free parameters. This potential is then averaged over a nuclear matter distribution in an attempt to produce a pion-nucleus potential for pion-¹²C scattering. The model is explored by varying several parameters in the potential and observing their effect on the differential cross section for pion-12C scattering with the pion kinetic energy equal to 50 MeV. No completely satisfactory fit to the data is found. It is suggested that treating this system as a pion-nucleon system interacting in the average field of the residual nucleus may give better results and some ideas are presented as to how this might be done. Applications of such a treatment of pion-nucleus interactions to the description of pion-nucleus "doorway" states (so far, apart from the N*, unobserved) are discussed.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-02-18
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0094088
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.