Search for a Heavy-philic W' Boson using Proton-Proton Collisions at Center-of-Mass Energy of 13 TeV using the ATLAS Detector
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| Title: | Search for a Heavy-philic W' Boson using Proton-Proton Collisions at Center-of-Mass Energy of 13 TeV using the ATLAS Detector |
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| Authors: | Gombas, Jason Peter |
| Committee Members: | Schwienhorst, Reinhard; Bazavov, Alexei; Spyrou, Artemis; Fisher, Wade; Lin, Huey-Wen |
| Summary: | This thesis presents a search for a new, hypothetical particle predicted by theories extending the Standard Model of particle physics. This heavy $W’$ boson interacts only with the heaviest known quarks, top and bottom (heavy-philic). Such a particle could provide insight into the fundamental forces of nature and be the first hint at extra dimensions or a composite Higgs. The $W’$ boson is produced in high-energy proton-proton collisions, mainly through gluon fusion. Its decay leads to a distinctive final state: $tbW’\rightarrow tbtb$. This search uses data collected by the ATLAS detector during Run 2 at the Large Hadron Collider, focusing on events with a single charged lepton, at least five jets, and at least three jets identified as originating from bottom quarks. To improve sensitivity to this rare process, advanced machine learning techniques are applied. A profile likelihood fit to the machine learning output is used to evaluate the data. No significant excess above the Standard Model background is observed, and exclusion limits are set at the 95\% confidence level on the production cross-section of the heavy-philic $W’$ boson. |
| URL: | https://doi.org/doi:10.25335/rmwv-2n63 |
| Database: | OpenDissertations |
| FullText | Text: Availability: 0 |
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| Header | DbId: ddu DbLabel: OpenDissertations An: ddu.oai.d.lib.msu.edu.etd_52584 AccessLevel: 6 PubType: Dissertation/ Thesis PubTypeId: dissertation PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Search for a Heavy-philic W' Boson using Proton-Proton Collisions at Center-of-Mass Energy of 13 TeV using the ATLAS Detector – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Gombas%2C+Jason+Peter%22">Gombas, Jason Peter</searchLink> – Name: Author Label: Committee Members Group: Au Data: <searchLink fieldCode="CO" term="%22Schwienhorst%2C+Reinhard%22">Schwienhorst, Reinhard</searchLink>; <searchLink fieldCode="CO" term="%22Bazavov%2C+Alexei%22">Bazavov, Alexei</searchLink>; <searchLink fieldCode="CO" term="%22Spyrou%2C+Artemis%22">Spyrou, Artemis</searchLink>; <searchLink fieldCode="CO" term="%22Fisher%2C+Wade%22">Fisher, Wade</searchLink>; <searchLink fieldCode="CO" term="%22Lin%2C+Huey-Wen%22">Lin, Huey-Wen</searchLink> – Name: Abstract Label: Summary Group: Ab Data: This thesis presents a search for a new, hypothetical particle predicted by theories extending the Standard Model of particle physics. This heavy $W’$ boson interacts only with the heaviest known quarks, top and bottom (heavy-philic). Such a particle could provide insight into the fundamental forces of nature and be the first hint at extra dimensions or a composite Higgs. The $W’$ boson is produced in high-energy proton-proton collisions, mainly through gluon fusion. Its decay leads to a distinctive final state: $tbW’\rightarrow tbtb$. This search uses data collected by the ATLAS detector during Run 2 at the Large Hadron Collider, focusing on events with a single charged lepton, at least five jets, and at least three jets identified as originating from bottom quarks. To improve sensitivity to this rare process, advanced machine learning techniques are applied. A profile likelihood fit to the machine learning output is used to evaluate the data. No significant excess above the Standard Model background is observed, and exclusion limits are set at the 95\% confidence level on the production cross-section of the heavy-philic $W’$ boson. – Name: URL Label: URL Group: URL Data: <link linkTarget="URL" linkTerm="https://doi.org/doi:10.25335/rmwv-2n63" linkWindow="_blank">https://doi.org/doi:10.25335/rmwv-2n63</link> |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=ddu&AN=ddu.oai.d.lib.msu.edu.etd_52584 |
| RecordInfo | BibRecord: BibEntity: Languages: – Code: eng Text: English Subjects: – SubjectFull: Particle physics Type: general – SubjectFull: Computational physics Type: general – SubjectFull: Physics--Computer simulation Type: general – SubjectFull: Particles (Nuclear physics) Type: general Titles: – TitleFull: Search for a Heavy-philic W' Boson using Proton-Proton Collisions at Center-of-Mass Energy of 13 TeV using the ATLAS Detector Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Gombas, Jason Peter IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Type: published Y: 2025 |
| ResultId | 1 |
