First polarisation measurement of coherently photoproduced J/ψ in ultra-peripheral Pb–Pb collisions at sNN=5.02 TeV


Acharya S., Adamová D., Adler A., Aglieri Rinella G., Agnello M., Agrawal N., ...Daha Fazla

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, cilt.865, 2025 (SCI-Expanded) identifier

Özet

The first measurement of the polarisation of coherently photoproduced J/ψ mesons in ultra-peripheral Pb–Pb collisions, using data at sNN=5.02 TeV, is presented. The J/ψ meson is measured via its dimuon decay channel in the forward rapidity interval −4.0