Angles on CP-violation in Higgs boson interactions
CP-violation in the Higgs sector remains a possible source of the baryon asymmetry of the universe. Recent differential measurements of signed angular distributions in Higgs boson production provide a general experimental probe of the CP structure of Higgs boson interactions. We interpret these meas...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Published: |
Elsevier
2019
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| _version_ | 1797062776614551552 |
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| author | Bernlochner, F Englert, C Hays, C Lohwasser, K Mildner, H Pilkington, A Price, D Spannowsky, M |
| author_facet | Bernlochner, F Englert, C Hays, C Lohwasser, K Mildner, H Pilkington, A Price, D Spannowsky, M |
| author_sort | Bernlochner, F |
| collection | OXFORD |
| description | CP-violation in the Higgs sector remains a possible source of the baryon asymmetry of the universe. Recent differential measurements of signed angular distributions in Higgs boson production provide a general experimental probe of the CP structure of Higgs boson interactions. We interpret these measurements using the Standard Model Effective Field Theory and show that they do not distinguish the various CP-violating operators that couple the Higgs and gauge fields. However, the constraints can be sharpened by measuring additional CP-sensitive observables and exploiting phase-space-dependent effects. Using these observables, we demonstrate that perturbatively meaningful constraints on CP-violating operators can be obtained at the LHC with luminosities of (100/fb). Our results provide a roadmap to a global Higgs boson coupling analysis that includes CP-violating effects. |
| first_indexed | 2024-03-06T20:50:24Z |
| format | Journal article |
| id | oxford-uuid:375bea75-8046-4e85-a138-0c3148f53c42 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:50:24Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:375bea75-8046-4e85-a138-0c3148f53c422022-03-26T13:43:38ZAngles on CP-violation in Higgs boson interactionsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:375bea75-8046-4e85-a138-0c3148f53c42Symplectic Elements at OxfordElsevier2019Bernlochner, FEnglert, CHays, CLohwasser, KMildner, HPilkington, APrice, DSpannowsky, MCP-violation in the Higgs sector remains a possible source of the baryon asymmetry of the universe. Recent differential measurements of signed angular distributions in Higgs boson production provide a general experimental probe of the CP structure of Higgs boson interactions. We interpret these measurements using the Standard Model Effective Field Theory and show that they do not distinguish the various CP-violating operators that couple the Higgs and gauge fields. However, the constraints can be sharpened by measuring additional CP-sensitive observables and exploiting phase-space-dependent effects. Using these observables, we demonstrate that perturbatively meaningful constraints on CP-violating operators can be obtained at the LHC with luminosities of (100/fb). Our results provide a roadmap to a global Higgs boson coupling analysis that includes CP-violating effects. |
| spellingShingle | Bernlochner, F Englert, C Hays, C Lohwasser, K Mildner, H Pilkington, A Price, D Spannowsky, M Angles on CP-violation in Higgs boson interactions |
| title | Angles on CP-violation in Higgs boson interactions |
| title_full | Angles on CP-violation in Higgs boson interactions |
| title_fullStr | Angles on CP-violation in Higgs boson interactions |
| title_full_unstemmed | Angles on CP-violation in Higgs boson interactions |
| title_short | Angles on CP-violation in Higgs boson interactions |
| title_sort | angles on cp violation in higgs boson interactions |
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