Date on Master's Thesis/Doctoral Dissertation

5-2021

Document Type

Doctoral Dissertation

Degree Name

Ph. D.

Department

Physics and Astronomy

Degree Program

Physics, PhD

Committee Chair

Brown, David

Committee Co-Chair (if applicable)

Banerjee, Swagato

Committee Member

Banerjee, Swagato

Committee Member

Sumanasekera, Gamini

Committee Member

Riedel, Thomas

Author's Keywords

particle physics; hadron; babar; meson; multiplicity; photon

Abstract

In this dissertation I present independent measurements of the multiplicities, R, of π0 and η mesons produced in annihilation interactions of electrons and positrons at a center-of-mass energy of 10.54 GeV. Data were collected using the BaBar detector at the PEP-II storage rings located at the SLAC National Accelerator Laboratory in Menlo Park, California. Both mesons have a decay mode to two photons, which is used to identify them and measure their production per event. I find R(π0) = 2.8±0.3 per event and R(η) = 0.25±0.03 per event. I also present my contributions to software development for the Mu2e Experiment at the Fermi National Accelerator Laboratory.

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