PT Journal
AU LHCb Collaboration (Aaij, Rea
   Henry, L
   Jashal, BK
   Martinez-Vidal, F
   Oyanguren, A
   Remon Alepuz, C
   Ruiz Vidal, J
TI Study of coherent J/psi production in lead-lead collisions at root S-NN=5 TeV
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2022
BP 117
EP 19pp
VL 07
IS 7
DI 10.1007/JHEP07(2022)117
LA English
DE Heavy Ion Experiments; Particle and Resonance Production; QCD; Quarkonium; Relativistic Heavy Ion Physics
AB Coherent production of J/psi mesons is studied in ultraperipheral lead-lead collisions at a nucleon-nucleon centre-of-mass energy of 5 TeV, using a data sample collected by the LHCb experiment corresponding to an integrated luminosity of about 10 μb(-1). The J/psi mesons are reconstructed in the dimuon final state and are required to have transverse momentum below 1 GeV. The cross-section within the rapidity range of 2.0 < y < 4.5 is measured to be 4.45 +/- 0.24 +/- 0.18 +/- 0.58 mb, where the first uncertainty is statistical, the second systematic and the third originates from the luminosity determination. The cross-section is also measured in J/psi rapidity intervals. The results are compared to predictions from phenomenological models.
ER