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Title: | Soft Photon Theorems in Bremsstrahlung and Photoproduction of Pions |
Authors: | Holland, Peter John |
Advisor: | Nogami, Y. |
Department: | Physics |
Keywords: | photon, bremsstrahlung, cross-section, photoproduction, pion, theorem |
Publication Date: | Sep-1970 |
Abstract: | <p> In the soft photon limit the bremsstrahlung cross-section is related to the corresponding elastic scattering cross-section in a model-independent manner. The cross-section for threshold photoproduction of pions becomes independent of the detailed pion-nucleon interaction if the ratio of pion to nucleon mass is made sufficiently small. These two results are a consequence of the gauge invariance of the scattering amplitude for a process involving one photon. We review the derivation of Low's bremsstrahlung theorem for spin-zero and spin-half particles, and outline an extension to all orders of photon energy. The theorem for photopion production is derived by the same method. A non-relativistic analogue to the Bremsstrahlung theorem is also considered.</p> |
URI: | http://hdl.handle.net/11375/17950 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Holland_Peter_J._1970Sept_Masters..pdf | 1.04 MB | Adobe PDF | View/Open |
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