Degree Type

Dissertation

Date of Award

1990

Degree Name

Doctor of Philosophy

Department

Physics and Astronomy

First Advisor

Bing-Lin Young

Abstract

The production of the neutral technicolor pseudo Goldstone bosons, P[superscript]0[superscript]' and Psp80[superscript]', at large transverse momentum in pp collisions, pp → g(q)P[superscript]0[superscript]' (Psp80[superscript]')X has been investigated in reactions at a high energy collider such as the SSC. The major two-body and three-body decay modes in tree diagrams are investigated in detail. The t[macron] t decay channel would dominate both the decays of P[superscript]0[superscript]' and Psp80[superscript]' if it is allowed. Otherwise, gg and 3g will be the dominant decay modes unless the mass of the P[superscript]0[superscript]' and Psp80[superscript]' are below 40 GeV, where b[macron] b becomes dominant. According to the QCD backgrounds, which we have also investigated in detail in this work, the signal for t[macron] t is much larger than the background and will be the ideal signal for detecting these bosons. However, in the absence of the t[macron] t channel, the [tau][macron] [tau] mode can be used to identify P[superscript]0[superscript]' up to m P = 300 GeV in the transverse momentum range P⊥ < 100 GeV. Similarly, the b[macron] b decay mode can serve us a signal to identify Psp80[superscript]' up to m P = 300 GeV for P⊥ between 500 and 700 GeV. Our results show that these high transverse momentum production processes are useful for the searching for the P[superscript]0[superscript]' and Psp80[superscript]' at the SSC.

DOI

https://doi.org/10.31274/rtd-180813-11270

Publisher

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

Copyright Owner

Wang-Chuang Kuo

Language

en

Proquest ID

AAI9035087

File Format

application/pdf

File Size

132 pages

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