Aad, G.Aakvaag, E.Abbott, B.Beddall, Andrew JohnÇetin, Serkant AliÖztürk, SertaçŞimşek, SinemUysal, Zekeriya2025-04-182025-04-182024Aad, G., Aakvaag, E., Abbott, B., Abeling, K., Abicht, N. J., Abidi, S. H., ... & Baines, L. (2024). Searches for exclusive Higgs boson decays into D⁎ γ and Z boson decays into D0γ and Ks0γ in pp collisions at s= 13TeV with the ATLAS detector. Physics Letters B, 138762.03702693http://dx.doi.org/10.1016/j.physletb.2024.138762https://hdl.handle.net/20.500.12713/6875Searches for exclusive decays of the Higgs boson into D⁎γ 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 D⁎γ and D0γ channels, the observed (expected) 95% confidence-level upper limits on the respective branching fractions are B(H→D⁎γ)<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.eninfo:eu-repo/semantics/openAccessArticle855125WOS:0012713789000012-s2.0-85195456110Q110.1016/j.physletb.2024.138762Q1