Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/8499
Title: Search for Higgs and Z Boson Decays To J/Ψ or Y Pairs in the Four-Muon Final State in Proton-Proton Collisions at S=13tev
Authors: Sirunyan, A.M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Bergauer, T.
Brandstetter, J.
Fernandez Bedoya, C.
Keywords: Cms
Higgs Boson
Rare Decays
Standard Model Physics
Z Boson
Publisher: Elsevier B.V.
Abstract: A search for decays of the Higgs and Z boson to pairs of J/ψ or Y(nS) (n = 1, 2, 3) mesons, with their subsequent decay to μ+μ− pairs, is presented. The analysis uses data from proton-proton collisions at s=13TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5fb−1. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/ψ pair channel, the limits are 1.8×10−3 and 2.2×10−6 for the Higgs and Z boson, respectively, while in the combined Y(nS) pair channel, the limits are 1.4×10−3 and 1.5×10−6, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are considered the limits reduce by about 22–29% and increase by about 10–13%, respectively. © 2019 The Author(s)
URI: https://doi.org/10.1016/j.physletb.2019.134811
ISSN: 0370-2693
Appears in Collections:Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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