Comparison of $\lambda_{\theta}$ with UPC measurement

Scope: PWG
PWG-DQ (Dileptons and Quarkonia)
Energy
5.02 TeV
System
Pb-Pb
Figure Image
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Figure Caption

Comparison of $\lambda_{\theta}$ of J/$\psi$ from peripheral collisions ( 70-90 %) and UPC at 5.02 TeV

Detail description

Data : LHC  2015 + 2018 productions using standard selection for J/\psi production study from unlike sign dimuon pairs

Centrality : 70-90 %

Rapidity :  -4.0 < y < -2.5

pT cut :  < 0.3 GeV/c

Polarization axis : Helicity Frame