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Search for the Higgs boson decays to a ρ0, φ, or K⁎0 meson and a photon in proton-proton collisions at s=13TeV

  • The CMS collaboration
  • CERN
  • A. Alikhanian Yerevan Institute of Physics
  • Austrian Academy of Sciences
  • University of Antwerp
  • Vrije Universiteit Brussel
  • Université libre de Bruxelles

Araştırma çıktısı: Dergi yayını › Makale › Hakemli

5 Atıf (Scopus)

Özet

Three rare decay processes of the Higgs boson to a ρ(770)0, ϕ(1020), or K⁎(892)0 meson and a photon are searched for using s=13TeV proton-proton collision data collected by the CMS experiment at the LHC. Events are selected assuming the mesons decay into a pair of charged pions, a pair of charged kaons, or a charged kaon and pion, respectively. Depending on the Higgs boson production mode, different triggering and reconstruction techniques are adopted. The analyzed data sets correspond to integrated luminosities up to 138fb−1, depending on the reconstructed final state. After combining various data sets and categories, no significant excess above the background expectations is observed. Upper limits at 95% confidence level on the Higgs boson branching fractions into ρ(770)0γ, ϕ(1020)γ, and K⁎(892)0γ are determined to be 3.7×10−4, 3.0×10−4, and 3.0×10−4, respectively. In case of the ρ(770)0γ and ϕ(1020)γ channels, these are the most stringent experimental limits to date.

Orijinal dilİngilizce
Makale numarası139296
DergiPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Hacim862
DOI'lar
Yayın durumuYayınlandı - Mar 2025
Harici olarak yayınlandıEvet

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Publisher Copyright:
© 2025 CERN for the benefit of the CMS Collaboration

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