Prospects for constraining light-quark electroweak couplings at Higgs factories
Electroweak Precision Measurements are stringent tests of the Standard Model and sensitive probes to New Physics. Accurate studies of the Z-boson couplings to the first-generation quarks could reveal potential discrepancies between the fundamental theory and experimental data. Future e+e− colliders...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2024-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01023.pdf |
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| author | Mękała Krzysztof Jeans Daniel Reuter Jürgen Tian Junping Żarnecki Aleksander Filip |
| author_facet | Mękała Krzysztof Jeans Daniel Reuter Jürgen Tian Junping Żarnecki Aleksander Filip |
| author_sort | Mękała Krzysztof |
| collection | DOAJ |
| description | Electroweak Precision Measurements are stringent tests of the Standard Model and sensitive probes to New Physics. Accurate studies of the Z-boson couplings to the first-generation quarks could reveal potential discrepancies between the fundamental theory and experimental data. Future e+e− colliders running at the Z-pole and around the ZH threshold would be an excellent tool to perform such a measurement, unlike the LHC where hadronic Z decays are only available in boosted topologies. The measurement is based on comparison of radiative and non-radiative hadronic decays. Due to the difference in quark charge, the relative contribution of the events with final-state radiation (FSR) directly reflects the ratio of decays involving up-and down-type quarks. Such an analysis requires proper modeling and statistical discrimination between photons coming from different sources, including initial-state radiation (ISR), FSR, parton showers and hadronisation. In our contribution, we show how to extract the values of the Z couplings to light quarks and present the estimated uncertainties of the measurement. |
| format | Article |
| id | doaj-art-35c4b760dfe34762badbcb1bf9e96755 |
| institution | Kabale University |
| issn | 2100-014X |
| language | English |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-35c4b760dfe34762badbcb1bf9e967552025-01-06T11:33:47ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-013150102310.1051/epjconf/202431501023epjconf_lcws2024_01023Prospects for constraining light-quark electroweak couplings at Higgs factoriesMękała Krzysztof0Jeans Daniel1Reuter Jürgen2Tian Junping3Żarnecki Aleksander Filip4Deutsches Elektronen-Synchrotron DESYKEKDeutsches Elektronen-Synchrotron DESYInternational Center for Elementary Particle Physics ICEPP, University of TokyoFaculty of Physics, University of WarsawElectroweak Precision Measurements are stringent tests of the Standard Model and sensitive probes to New Physics. Accurate studies of the Z-boson couplings to the first-generation quarks could reveal potential discrepancies between the fundamental theory and experimental data. Future e+e− colliders running at the Z-pole and around the ZH threshold would be an excellent tool to perform such a measurement, unlike the LHC where hadronic Z decays are only available in boosted topologies. The measurement is based on comparison of radiative and non-radiative hadronic decays. Due to the difference in quark charge, the relative contribution of the events with final-state radiation (FSR) directly reflects the ratio of decays involving up-and down-type quarks. Such an analysis requires proper modeling and statistical discrimination between photons coming from different sources, including initial-state radiation (ISR), FSR, parton showers and hadronisation. In our contribution, we show how to extract the values of the Z couplings to light quarks and present the estimated uncertainties of the measurement.https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01023.pdf |
| spellingShingle | Mękała Krzysztof Jeans Daniel Reuter Jürgen Tian Junping Żarnecki Aleksander Filip Prospects for constraining light-quark electroweak couplings at Higgs factories EPJ Web of Conferences |
| title | Prospects for constraining light-quark electroweak couplings at Higgs factories |
| title_full | Prospects for constraining light-quark electroweak couplings at Higgs factories |
| title_fullStr | Prospects for constraining light-quark electroweak couplings at Higgs factories |
| title_full_unstemmed | Prospects for constraining light-quark electroweak couplings at Higgs factories |
| title_short | Prospects for constraining light-quark electroweak couplings at Higgs factories |
| title_sort | prospects for constraining light quark electroweak couplings at higgs factories |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01023.pdf |
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