Searches for exclusive decays of the Higgs boson into D⁎γ and of the Z boson into D0γ and Ks0γ 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 Ks0γ channel are B(Z→Ks0γ)<3.1(3.0)×10−6.

Aad, G., Aakvaag, E., Abbott, B., Abeling, K., Abicht, N.J., Abidi, S.H., et al. (2024). Searches for exclusive Higgs boson decays into D*γ and Ζ boson decays into D0γ and K0sγ in pp collisions at √s = 13TeV with the ATLAS detector. PHYSICS LETTERS. SECTION B, 855 [10.1016/j.physletb.2024.138762].

Searches for exclusive Higgs boson decays into D*γ and Ζ boson decays into D0γ and K0sγ in pp collisions at √s = 13TeV with the ATLAS detector

Di Micco, B.;Di Nardo, R.;Montereali, F.;Orestano, D.;
2024-01-01

Abstract

Searches for exclusive decays of the Higgs boson into D⁎γ and of the Z boson into D0γ and Ks0γ 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 Ks0γ channel are B(Z→Ks0γ)<3.1(3.0)×10−6.
2024
Aad, G., Aakvaag, E., Abbott, B., Abeling, K., Abicht, N.J., Abidi, S.H., et al. (2024). Searches for exclusive Higgs boson decays into D*γ and Ζ boson decays into D0γ and K0sγ in pp collisions at √s = 13TeV with the ATLAS detector. PHYSICS LETTERS. SECTION B, 855 [10.1016/j.physletb.2024.138762].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/524957
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact