{"id":{"repo_id":"penn","oai_identifier":"oai:repository.upenn.edu:20.500.14332/49817"},"canonical_url":"https://search.dev.ndltd.org/etd/penn/oai:repository.upenn.edu:20.500.14332/49817","repository":{"repo_id":"penn","name":"University of Pennsylvania","base_url":"https://repository.upenn.edu/server/oai/request"},"display":{"title":"Measurement of Inclusive Isolated Prompt Photon Production at √s = 7 TeV with the ATLAS Detector","abstract":"Prompt photons at hadron colliders are useful probes of perturbative quantum chromodynamics (pQCD), and are also found in signatures of new physics. A precise measurement of prompt photon production is both a useful test of theoretical models as well as an important step towards understanding final states that contain energetic photons. This thesis presents a measurement of the inclusive isolated prompt photon production cross section in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data are collected with the ATLAS detector at the Large Hadron Collider, and correspond to 35 pb-1 of integrated luminosity. The measurement is made in four photon pseudorapidity (η) regions: 0 < |ηγ| < 0.6; 0.6 < |ηγ| < 1.37; 1.52 <|ηγ|< 1.81; and 1.81 <|ηγ|< 2.37; and covers photon transverse energies (ET) in the range 15 GeV < ET < 400 GeV. Photon candidates are reconstructed and identified through the use of the ATLAS calorimeter and tracking systems. The residual background, primarily from neutral meson decays, is estimated using in-situ techniques based on observed distributions of the total transverse energy in a narrow cone around the photon candidate. The measurements are compared to predictions from next-to-leading order pQCD calculations, with good agreement for photon transverse energies greater than 25 GeV.","abstract_html":"Prompt photons at hadron colliders are useful probes of perturbative quantum chromodynamics (pQCD), and are also found in signatures of new physics. A precise measurement of prompt photon production is both a useful test of theoretical models as well as an important step towards understanding final states that contain energetic photons. This thesis presents a measurement of the inclusive isolated prompt photon production cross section in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data are collected with the ATLAS detector at the Large Hadron Collider, and correspond to 35 pb-1 of integrated luminosity. The measurement is made in four photon pseudorapidity (η) regions: 0 &lt; |ηγ| &lt; 0.6; 0.6 &lt; |ηγ| &lt; 1.37; 1.52 &lt;|ηγ|&lt; 1.81; and 1.81 &lt;|ηγ|&lt; 2.37; and covers photon transverse energies (ET) in the range 15 GeV &lt; ET &lt; 400 GeV. Photon candidates are reconstructed and identified through the use of the ATLAS calorimeter and tracking systems. The residual background, primarily from neutral meson decays, is estimated using in-situ techniques based on observed distributions of the total transverse energy in a narrow cone around the photon candidate. The measurements are compared to predictions from next-to-leading order pQCD calculations, with good agreement for photon transverse energies greater than 25 GeV.","abstract_has_math":false,"creators":["Hance, Michael"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["H. H. Williams"],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-08-12","date_published":"2011-08-12","updated_at":"2026-07-24T03:46:11Z","subjects":["Elementary Particles and Fields and String Theory"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://repository.upenn.edu/handle/20.500.14332/49817","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["H. H. 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A precise measurement of prompt photon production is both a useful test of theoretical models as well as an important step towards understanding final states that contain energetic photons. This thesis presents a measurement of the inclusive isolated prompt photon production cross section in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data are collected with the ATLAS detector at the Large Hadron Collider, and correspond to 35 pb-1 of integrated luminosity. The measurement is made in four photon pseudorapidity (η) regions: 0 < |ηγ| < 0.6; 0.6 < |ηγ| < 1.37; 1.52 <|ηγ|< 1.81; and 1.81 <|ηγ|< 2.37; and covers photon transverse energies (ET) in the range 15 GeV < ET < 400 GeV. Photon candidates are reconstructed and identified through the use of the ATLAS calorimeter and tracking systems. The residual background, primarily from neutral meson decays, is estimated using in-situ techniques based on observed distributions of the total transverse energy in a narrow cone around the photon candidate. The measurements are compared to predictions from next-to-leading order pQCD calculations, with good agreement for photon transverse energies greater than 25 GeV."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Doctor of Philosophy (PhD)"]},{"key":"dc:title","label":"Title","values":["Measurement of Inclusive Isolated Prompt Photon Production at √s = 7 TeV with the ATLAS Detector"]}]}],"canonical_facts":{"dc:contributor.advisor":["H. H. Williams"],"dc:creator":["Hance, Michael"],"dc:date":["2023-05-24T09:56:06.385"],"dc:date.accessioned":["2023-05-24T10:04:09Z"],"dc:date.available":["2011-07-13T00:00:00Z"],"dc:date.issued":["2011-08-12"],"dc:description.abstract":["Prompt photons at hadron colliders are useful probes of perturbative quantum chromodynamics (pQCD), and are also found in signatures of new physics. A precise measurement of prompt photon production is both a useful test of theoretical models as well as an important step towards understanding final states that contain energetic photons. This thesis presents a measurement of the inclusive isolated prompt photon production cross section in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data are collected with the ATLAS detector at the Large Hadron Collider, and correspond to 35 pb-1 of integrated luminosity. The measurement is made in four photon pseudorapidity (η) regions: 0 < |ηγ| < 0.6; 0.6 < |ηγ| < 1.37; 1.52 <|ηγ|< 1.81; and 1.81 <|ηγ|< 2.37; and covers photon transverse energies (ET) in the range 15 GeV < ET < 400 GeV. Photon candidates are reconstructed and identified through the use of the ATLAS calorimeter and tracking systems. The residual background, primarily from neutral meson decays, is estimated using in-situ techniques based on observed distributions of the total transverse energy in a narrow cone around the photon candidate. The measurements are compared to predictions from next-to-leading order pQCD calculations, with good agreement for photon transverse energies greater than 25 GeV."],"dc:description.degree":["Doctor of Philosophy (PhD)"],"dc:identifier.uri":["https://repository.upenn.edu/handle/20.500.14332/49817"],"dc:subject":["Elementary Particles and Fields and String Theory"],"dc:title":["Measurement of Inclusive Isolated Prompt Photon Production at √s = 7 TeV with the ATLAS Detector"],"dc:type":["Dissertation/Thesis"]},"updated_at":"2026-07-24T03:46:11Z"}