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Title:Photon decay rate of sigma plus from unsubtracted dispersion relations
Author(s):Papaioannou, Gregory Miltiades
Doctoral Committee Chair(s):Nishijima, K.
Department / Program:Physics
Discipline:Physics
Degree:Ph.D.
Genre:Dissertation
Subject(s):photon decay
unsubtracted dispersion relations
integral representations
weak photon decay amplitudes
Abstract:Taking the viewpoint of unsubtracted dispersion relations we derive integral representations for the weak photon decay amplitudes Fl and F2. The integrals involve the magnetic and electric dipole amplitudes M and .1 Eo+ of the photopion production. They also involve the pion-nucleon scattering phase shifts of the states Pll, P3l, Sll and S3l , The integrals were carried out on a computer and the relative decay rate of Sigma+ -> py to its total rate was found to be 0.71 x 10-3, which is comparable with the latest experimental value (1.9 ± 0.4) x 10^-3.
Issue Date:1969
Genre:Dissertation / Thesis
Type:Text
Language:English
URI:http://hdl.handle.net/2142/25779
Rights Information:1969 Gregory Miltiades Papaioannou
Date Available in IDEALS:2011-07-12
Identifier in Online Catalog:6068781


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