Measuring hadronic Higgs boson branching ratios at future lepton colliders
Abstract We present a novel strategy for the simultaneous measurement of Higgs-boson branching ratios into gluons and light quarks at a future lepton collider operating in the Higgs-factory mode. Our method is based on template fits to global event-shape observables, and in particular fractional ene...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-12430-4 |
| _version_ | 1797233311214469120 |
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| author | Max Knobbe Frank Krauss Daniel Reichelt Steffen Schumann |
| author_facet | Max Knobbe Frank Krauss Daniel Reichelt Steffen Schumann |
| author_sort | Max Knobbe |
| collection | DOAJ |
| description | Abstract We present a novel strategy for the simultaneous measurement of Higgs-boson branching ratios into gluons and light quarks at a future lepton collider operating in the Higgs-factory mode. Our method is based on template fits to global event-shape observables, and in particular fractional energy correlations, thereby exploiting differences in the QCD radiation patterns of quarks and gluons. In a constrained fit of the deviations of the light-flavour hadronic Higgs-boson branching ratios from their Standard Model expectations, based on an integrated luminosity of $$5\,\text {ab}^{-1}$$ 5 ab - 1 , we obtain $$68\%$$ 68 % confidence level limits of $$\mu _{gg}=1 \pm 0.05$$ μ gg = 1 ± 0.05 and $$\mu _{q\bar{q}}<21$$ μ q q ¯ < 21 . |
| first_indexed | 2024-03-07T15:26:34Z |
| format | Article |
| id | doaj.art-387fdb03c47341c18b9955b30959ef5c |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-24T16:14:09Z |
| publishDate | 2024-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-387fdb03c47341c18b9955b30959ef5c2024-03-31T11:32:56ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-01-0184111210.1140/epjc/s10052-024-12430-4Measuring hadronic Higgs boson branching ratios at future lepton collidersMax Knobbe0Frank Krauss1Daniel Reichelt2Steffen Schumann3Institut für Theoretische Physik, Georg-August-Universität GöttingenInstitute for Particle Physics Phenomenology, Durham UniversityInstitute for Particle Physics Phenomenology, Durham UniversityInstitut für Theoretische Physik, Georg-August-Universität GöttingenAbstract We present a novel strategy for the simultaneous measurement of Higgs-boson branching ratios into gluons and light quarks at a future lepton collider operating in the Higgs-factory mode. Our method is based on template fits to global event-shape observables, and in particular fractional energy correlations, thereby exploiting differences in the QCD radiation patterns of quarks and gluons. In a constrained fit of the deviations of the light-flavour hadronic Higgs-boson branching ratios from their Standard Model expectations, based on an integrated luminosity of $$5\,\text {ab}^{-1}$$ 5 ab - 1 , we obtain $$68\%$$ 68 % confidence level limits of $$\mu _{gg}=1 \pm 0.05$$ μ gg = 1 ± 0.05 and $$\mu _{q\bar{q}}<21$$ μ q q ¯ < 21 .https://doi.org/10.1140/epjc/s10052-024-12430-4 |
| spellingShingle | Max Knobbe Frank Krauss Daniel Reichelt Steffen Schumann Measuring hadronic Higgs boson branching ratios at future lepton colliders European Physical Journal C: Particles and Fields |
| title | Measuring hadronic Higgs boson branching ratios at future lepton colliders |
| title_full | Measuring hadronic Higgs boson branching ratios at future lepton colliders |
| title_fullStr | Measuring hadronic Higgs boson branching ratios at future lepton colliders |
| title_full_unstemmed | Measuring hadronic Higgs boson branching ratios at future lepton colliders |
| title_short | Measuring hadronic Higgs boson branching ratios at future lepton colliders |
| title_sort | measuring hadronic higgs boson branching ratios at future lepton colliders |
| url | https://doi.org/10.1140/epjc/s10052-024-12430-4 |
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