Degree Type

Dissertation

Date of Award

1992

Degree Name

Doctor of Philosophy

Department

Physics and Astronomy

First Advisor

E. I. Rosenberg

Abstract

We present a study of the production of energetic isolated photons in the reaction e[superscript]+e[superscript]-→ Z[superscript]0→ q[macron]q[gamma] using the DELPHI detector at LEP. Within the context of the Standard Model, our results for final state radiation show no evidence for anomolous photon production due to rare or new processes. We present a comparison of our data with these theoretical expectations and present upper limits at the 95% CL on the cross section times the branching ratio to hadrons and a photon for the rare or new processes: (1) [sigma](e[superscript]+e[superscript]-→ Z[superscript]0→ H[superscript]0[gamma])· BR(H[superscript]0→ q[macron]q), (2) [sigma](e[superscript]+e[superscript]-→ Z[superscript]0→ qq[superscript]*)· BR(q[superscript]*→ q[gamma]), (3) [sigma](e[superscript]+e[superscript]-→ Z[superscript]0→ Z[superscript]*[gamma])· BR(Z[superscript]*→ q[macron]q).

DOI

https://doi.org/10.31274/rtd-180813-11964

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Randall R. Holmes

Language

en

Proquest ID

AAI9220971

File Format

application/pdf

File Size

136 pages

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