Search for exclusive Higgs and Z boson decays to ωγ and Higgs boson decays to K⁎γ with the ATLAS detector
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Archivos
Fecha
2023-12
Profesor/a Guía
Facultad/escuela
Idioma
en
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Título del volumen
Editor
Elsevier B.V.
Nombre de Curso
Licencia CC
Attribution 4.0 International Deed (CC BY 4.0)
Attribution 4.0 International Deed (CC BY 4.0)
Attribution 4.0 International Deed (CC BY 4.0)
Licencia CC
https://creativecommons.org/licenses/by/4.0/
https://creativecommons.org/licenses/by/4.0/
https://creativecommons.org/licenses/by/4.0/
Resumen
Searches for the exclusive decays of the Higgs boson to an ω meson and a photon or a K⁎ meson and a photon can probe flavour-conserving and flavour-violating Higgs boson couplings to light quarks, respectively. Searches for these decays, along with the analogous Z boson decay to an ω meson and a photon, are performed with a pp collision data sample corresponding to integrated luminosities of up to 134 fb−1 collected at s=13 TeV with the ATLAS detector at the CERN Large Hadron Collider. The obtained 95% confidence-level upper limits on the respective branching fractions are B(H→ωγ)<5.5×10−4, B(H→K⁎γ)<2.2×10−4 and B(Z→ωγ)<3.9×10−6. The limits for H→ωγ and Z→ωγ are 370 times and 140 times the Standard Model expected values, respectively. The result for Z→ωγ corresponds to a two-orders-of-magnitude improvement over the limit obtained by the DELPHI experiment at LEP. © 2023 The Author
Notas
Indexación: Scopus
Palabras clave
Higgs Boson, Hadron, Standard Model, Higgs Boson, ω meson, Photon, Large Hadron Collider, ωγ, K⁎γ
Citación
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. Volume 847. 10 December 2023. Article number 138292
DOI
10.1016/j.physletb.2023.138292
10.1016/j.physletb.2023.138316
10.1016/j.physletb.2023.138316