Hadrons created in heavy-ion collisions interact with the open color-charge of the quark-gluon plasma through their constituent quarks. The medium imparts substantial modifications to heavy-flavor hadrons' momentum spectra. For collisions of small systems, the centrality of those collisions affects both the production of heavy-quarks and the medium modifications that the heavy-quarks experience. This analysis uses the PHENIX detector at the Relativistic Heavy Ion Collider, which collected data from proton--gold collisions in 2015, with a trigger to preference the collection of the five-percent most-central collisions. This analysis uses the distance-of-closest-approach of electron tracks to study semileptonic decays from charm and bottom hadrons, and Bayesian unfolding to separate the two flavors. Additionally, this thesis presents background and analysis of the minimum-ionizing-particles observed by the sPHENIX hadronic calorimeter during the assembly and testing phase of that experiment's construction and commissioning.
","abstract_html":"<p>Hadrons created in heavy-ion collisions interact with the open color-charge of the quark-gluon plasma through their constituent quarks. The medium imparts substantial modifications to heavy-flavor hadrons' momentum spectra. For collisions of small systems, the centrality of those collisions affects both the production of heavy-quarks and the medium modifications that the heavy-quarks experience. This analysis uses the PHENIX detector at the Relativistic Heavy Ion Collider, which collected data from proton--gold collisions in 2015, with a trigger to preference the collection of the five-percent most-central collisions. This analysis uses the distance-of-closest-approach of electron tracks to study semileptonic decays from charm and bottom hadrons, and Bayesian unfolding to separate the two flavors. Additionally, this thesis presents background and analysis of the minimum-ionizing-particles observed by the sPHENIX hadronic calorimeter during the assembly and testing phase of that experiment's construction and commissioning.</p>","abstract_has_math":false,"creators":["Richford, Daniel"],"institution":"The Graduate School and University Center of The City University of New York","degree_name":"Doctor of Philosophy","degree_level":"Doctoral","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":[],"advisors":["Stefan Bathe"],"committee_chairs":[],"committee_members":["Adrian Dumitru","Takashi Hachiya","Jamal Jalilian-Marian","James Popp"],"year":2023,"date_issued":"2023-09-01T07:00:00Z","date_published":"2023-09-01T07:00:00Z","updated_at":"2026-07-24T01:59:30Z","subjects":["Nuclear"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://academicworks.cuny.edu/gc_etds/5555","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Stefan Bathe"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Adrian Dumitru","Takashi Hachiya","Jamal Jalilian-Marian","James Popp"]},{"key":"dc:creator","label":"Author","values":["Richford, Daniel"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2023-09-14T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Doctoral"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Doctor of Philosophy"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["The Graduate School and University Center of The City University of New York"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Nuclear"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://academicworks.cuny.edu/gc_etds/5555"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Hadrons created in heavy-ion collisions interact with the open color-charge of the quark-gluon plasma through their constituent quarks. The medium imparts substantial modifications to heavy-flavor hadrons' momentum spectra. For collisions of small systems, the centrality of those collisions affects both the production of heavy-quarks and the medium modifications that the heavy-quarks experience. This analysis uses the PHENIX detector at the Relativistic Heavy Ion Collider, which collected data from proton--gold collisions in 2015, with a trigger to preference the collection of the five-percent most-central collisions. This analysis uses the distance-of-closest-approach of electron tracks to study semileptonic decays from charm and bottom hadrons, and Bayesian unfolding to separate the two flavors. Additionally, this thesis presents background and analysis of the minimum-ionizing-particles observed by the sPHENIX hadronic calorimeter during the assembly and testing phase of that experiment's construction and commissioning.
"]},{"key":"dc:title","label":"Title","values":["Centrality Effects on Heavy-Flavor Quark Production and Invariant Yield in PHENIX Proton–Gold Collisions at Center-of-Mass Energy 200 GeV, and Assembly, Testing, Calibration, and Installation of the sPHENIX Hadronic Calorimeters"]}]}],"canonical_facts":{"dc:contributor.advisor":["Stefan Bathe"],"dc:contributor.committeemember":["Adrian Dumitru","Takashi Hachiya","Jamal Jalilian-Marian","James Popp"],"dc:creator":["Richford, Daniel"],"dc:date.available":["2023-09-14T07:00:00Z"],"dc:description.abstract":["Hadrons created in heavy-ion collisions interact with the open color-charge of the quark-gluon plasma through their constituent quarks. The medium imparts substantial modifications to heavy-flavor hadrons' momentum spectra. For collisions of small systems, the centrality of those collisions affects both the production of heavy-quarks and the medium modifications that the heavy-quarks experience. This analysis uses the PHENIX detector at the Relativistic Heavy Ion Collider, which collected data from proton--gold collisions in 2015, with a trigger to preference the collection of the five-percent most-central collisions. This analysis uses the distance-of-closest-approach of electron tracks to study semileptonic decays from charm and bottom hadrons, and Bayesian unfolding to separate the two flavors. Additionally, this thesis presents background and analysis of the minimum-ionizing-particles observed by the sPHENIX hadronic calorimeter during the assembly and testing phase of that experiment's construction and commissioning.
"],"dc:identifier":["https://academicworks.cuny.edu/gc_etds/5555"],"dc:subject":["Nuclear"],"dc:title":["Centrality Effects on Heavy-Flavor Quark Production and Invariant Yield in PHENIX Proton–Gold Collisions at Center-of-Mass Energy 200 GeV, and Assembly, Testing, Calibration, and Installation of the sPHENIX Hadronic Calorimeters"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Doctoral"],"thesis:degree_name":["Doctor of Philosophy"],"thesis:institution_name":["The Graduate School and University Center of The City University of New York"]},"updated_at":"2026-07-24T01:59:30Z"}