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Figure 5

Figure Information
Scope: PWG
PWG-UD (Ultraperipheral and Diffraction)
Energy
5.02 TeV
System
Pb-Pb
Figure Group
First polarisation measurement of coherently photoproduced J/$ψ$ in ultra-peripheral Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV
Figure Image
Figure image (.eps)
H1ZEUS.eps
Figure Caption

ALICE results displayed in terms of spin density matrix elements, along with statistical and systematic uncertainties. A comparison with the available lowest $Q^2$ ranges of the results from the H1 and ZEUS collaborations is also provided. H1 results~ correspond to $Q^2 \sim 0.05$ \GeVtwo consistent with photoproduction, while the shown ZEUS measurement~ is for $2 < Q^2 < 5$ \GeVtwo.

Detail description

Figure extracted from paper