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
Pages (from-to)1-25
Number of pages25
JournalPhysics Letters B
Volume855
DOIs
Publication statusPublished - Aug 2024
Externally publishedYes

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Copyright the Author(s) 2024. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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