The photoproduction of $J/\psi$ mesons at low transverse momentum is studied in peripheral lead-lead collisions collected by the LHCb Collaboration at a center-of-mass energy per nucleon pair of $5\mathrm{TeV}$, corresponding to an integrated luminosity of 210 $\mu {\mathrm{b}}^{-1}$. The $J/\psi$ candidates are reconstructed through the prompt decay into two muons of opposite charge in the rapidity region of $2.0<y<4.5$. The results significantly improve previous measurements and are compared to the latest theoretical prediction.

• Received 9 August 2021
• Accepted 14 February 2022

DOI:https://doi.org/10.1103/PhysRevC.105.L032201

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