Fig. 2: Invariant mass distributions for the three μ+μ− pairs in the selected events. | Nature Physics

Fig. 2: Invariant mass distributions for the three μ+μ− pairs in the selected events.

From: Observation of triple J/ψ meson production in proton-proton collisions

Fig. 2: Invariant mass distributions for the three μ+μ− pairs in the selected events.The alternative text for this image may have been generated using AI.

The three distributions are ordered, left to right, by decreasing pair pT. The data are represented by the points with the vertical bars showing the (Poisson) statistical uncertainties. The solid (dotted) curve shows the overall fit to the data (in the extended mass range, discussed in the main text), and the red shaded area shows the fitted signal yield. The horizontal bin width is indicated on the vertical axis legend.

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