2026-09-21T08:08:29Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/25779 2023-07-10 col_2142_8859 col_2142_5131 com_2142_8858 com_2142_234 com_2142_5130

Dissertation / Thesis text Nishijima, K. Papaioannou, Gregory Miltiades 2011-07-12T17:59:46Z 2011-07-12T17:59:46Z 10000-01-01 1969 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. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-12T17:59:46Z No. of bitstreams: 1 1969_papiaoannou.pdf: 1956581 bytes, checksum: c885a19a503a8b63529ccc319493d960 (MD5) Made available in DSpace on 2011-07-12T17:59:46Z (GMT). No. of bitstreams: 1 1969_papiaoannou.pdf: 1956581 bytes, checksum: c885a19a503a8b63529ccc319493d960 (MD5) Previous issue date: 1969 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-12T17:59:46Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:33:06-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 6068781 http://hdl.handle.net/2142/25779 en 1969 Gregory Miltiades Papaioannou photon decay unsubtracted dispersion relations integral representations weak photon decay amplitudes Photon decay rate of sigma plus from unsubtracted dispersion relations Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.