A search for pair production of new light bosons decaying into muons in proton-proton collisions at 13 TeV
Phys.Lett.B 796 (2019) 131-154, 2019.
The CMS collaboration

Abstract (data abstract)
90% CL and 95% limits on the production cross section times branching fraction of Higgs boson decay to a pair of light bosons to four muons as function of the light boson mass.

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