Searches for exclusive Higgs boson decays into Dγ and Z boson decays into D0γ and Ks 0γ in pp collisions at s=13TeV with the ATLAS detector

The ATLAS collaboration

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Abstract

Searches for exclusive decays of the Higgs boson into Dγ and of the Z boson into D0γ and Ks 0γ can probe flavour-violating Higgs boson and Z boson couplings to light quarks. Searches for these decays are performed with a pp collision data sample corresponding to an integrated luminosity of 136.3 fb−1 collected at s=13TeV between 2016–2018 with the ATLAS detector at the CERN Large Hadron Collider. In the Dγ and D0γ channels, the observed (expected) 95% confidence-level upper limits on the respective branching fractions are B(H→Dγ)<1.0(1.2)×10−3, B(Z→D0γ)<4.0(3.4)×10−6, while the corresponding results in the Ks 0γ channel are B(Z→Ks 0γ)<3.1(3.0)×10−6.

Original languageEnglish
Article number138762
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume855
DOIs
Publication statusPublished - 1 Aug 2024

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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