We perform an analysis dedicated to the search for new and unusual strangeonium states produced in the reaction γp → pφη. The data used for this analysis was recorded during the Spring 2017 physics run for Hall D of Thomas Jefferson National Accelerator Facility, where the GlueX experiment is located. The GlueX experiment uses a linearly polarized coherent bremsstrahlung beam of up to 12 GeV in energy. This photon beam interacts with a stationary liquid hydrogen target located inside the GlueX detector. The subsequent photoproduction will provide final states ideal for studying both exotic and non-exotic ss ̄ mesons. After all cuts, a total of four different selection methods were used to study the φη parent state. Three of these methods used an event by event probabilistic weighting method in order to separate signal from background, and the fourth method was simply an elliptical subtraction which did not utilize probabilistic weighting. After comparing the φη invariant mass spectra for all selection methods, two structures were consistently observed. One of the structures was found to have a mass of (m = 1.657 ± 0.008)GeV/c^2 and a width of (σ = 0.190 ± 0.024)GeV/^2 ; and the second structure was found to have a mass of (m = 1.879 ± 0.004)GeV/c^2 and a width of (σ = 0.042 ± 0.014)GeV/c^2 . / A Dissertation submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Doctor of Philosophy. / Spring Semester 2019. / April 12, 2019. / GlueX, Jefferson Lab, Nuclear Physics, Photoproduction / Includes bibliographical references. / Paul Eugenio, Professor Directing Dissertation; Ettore Aldrovandi, University Representative; Simon Capstick, Committee Member; Horst Wahl, Committee Member; Volker Crede, Committee Member; Alexander Ostrovidov, Committee Member.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_709727 |
| Contributors | Cannon, Bradford Emerson (author), Eugenio, Paul Michael (Professor Directing Dissertation), Aldrovandi, Ettore (University Representative), Capstick, Simon (Committee Member), Wahl, Horst (Committee Member), Crede, Volker (Committee Member), Ostrovidov, Alexander (Committee Member), Florida State University (degree granting institution), College of Arts and Sciences (degree granting college), Department of Physics (degree granting departmentdgg) |
| Publisher | Florida State University |
| Source Sets | Florida State University |
| Language | English, English |
| Detected Language | English |
| Type | Text, text, doctoral thesis |
| Format | 1 online resource (199 pages), computer, application/pdf |
Page generated in 0.0019 seconds