| dc.contributor.author | Monyonko, Nyang'au M | |
| dc.date.accessioned | 2013-05-22T12:41:08Z | |
| dc.date.available | 2013-05-22T12:41:08Z | |
| dc.date.issued | 1984 | |
| dc.identifier.citation | Doctor of Philosophy | en |
| dc.identifier.uri | http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/24464 | |
| dc.description.abstract | Radiative corrections in gauge theories are used to study
physical processes on the basis of the standard electroweak model.
The concepts of gauge invariance and gauge dependence are
investigated by considering the electromagnetic couplings of
neutrinos using a generalized nonlinear renoI1nalizable gauge.
Firstly, the charged weal, vector boson field is found to satisfy
the naive Ward identity and in consequence the one-loop
contributions give zero neutrino charge. The separate diagrams
contributing to the photon self-energy are transverse and the
divergent parts gauge independent. Secondly, in Cl spontaneously
broken theory the one-loop contributions to the background field
vacuum polarization are separately transverse. Kallosh's theorem .•
is also verified in this 'case. The results of a massless limit
of the broken theory are, however not those of the unbroken
theory. The electromagnetic form factor of the neutrino is
finally considered and shown to be a complicated function of
the gauge parameter. The charge radius computed from the form factor is gauge dependent , It is then concluded that the
neutrino charge radius has no physical meaning in the standard
model | en |
| dc.description.sponsorship | University of Nairobi | en |
| dc.language.iso | en | en |
| dc.title | Renormalizable gauges and radiative corrections in gauge theories | en |
| dc.type | Thesis | en |
| local.publisher | Department of Physics, University of Nairobi | en |
