Searches for the exclusive decays of the Higgs and Z bosons into a J/ψ, ψ(2S), or ϒ(nS) (n=1,2,3) meson and a photon are performed with a pp collision data sample corresponding to an integrated luminosity of 36.1fb⁻¹ collected at s=13TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above the expected backgrounds, and 95% confidence-level upper limits on the branching fractions of the Higgs boson decays to J/ψγ, ψ(2S)γ, and ϒ(nS)γ of 3.5×10⁻⁴, 2.0×10⁻³, and (4.9,5.9,5.7)×10⁻⁴, respectively, are obtained assuming Standard Model production. The corresponding 95% confidence-level upper limits for the branching fractions of the Z boson decays are 2.3×10⁻⁶, 4.5×10⁻⁶ and (2.8,1.7,4.8)×10⁻⁶, respectively. © 2018 The Author

العنوان

Physics Letters B

الناشر

Elsevier B.V.

بلد الناشر

هولندا

Indexing

Thomson Reuters

معامل التأثير

4,254

نوع المنشور

مطبوع فقط

المجلد

786

السنة

2018

الصفحات

134-155