Date of Award

Spring 2020

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Physics

Program/Concentration

Applied Physics

Committee Director

Moskov Amaryan

Committee Member

Anatoly Radyushkin

Committee Member

Stephen Bueltmann

Committee Member

Alexander Gurevich

Committee Member

Alvin Holder

Abstract

In this work the photon beam asymmetry Σ for the reaction γp K+ Σ0(1193) is measured using the GlueX experiment in Hall D at Jefferson Lab. The analysis used data that were collected using a linearly polarized photon beam in the energy range (8.2 - 8.8) GeV incident on a liquid hydrogen target. The beam asymmetries are measured as a function of the Mandelstam variable t and as a single value for the low u region. These are the first exclusive measurements of the photon beam asymmetry Σ in this reaction at energies above the baryon resonance region. For the t-channel, results are close to unity and show that the reaction is dominated by the natural-parity exchange of the K*(892) Regge trajectory as predicted by theoretical models. A value of Σ = 0.410±0.090 is obtained for the u-channel and suggests the exchange of both Σ(J = 1/2) and Y*(J = 3/2) trajectory contributions to the production of K+Σ0.

DOI

10.25777/rgbw-1281

ISBN

9798672183503

ORCID

0000-0002-7109-4097

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