Diffractive photoproduction of J/ψ at LHC energies

37th Brazilian Meeting on Nuclear Physics

Gonçalves, V.P.^1 ; Moreira, B.D.^2 ; Navarra, F.S.^2

High and Medium Energy Group, Instituto de Física e Matemática, Universidade Federal de Pelotas, Caixa Postal 354, Pelotas, RS

CEP 96010-900, Brazil^1

Instituto de Física, Universidade de São Paulo, Caixa Postal 66318, São Paulo, SP

05315-970, Brazil^2

关键词: Nonlinear effect;    Pb-Pb collisions;    Photoproductions;    Proton scattering;    Rapidity distribution;    Vector meson;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/630/1/012061/pdf
DOI  :  10.1088/1742-6596/630/1/012061

来源: IOP

【 摘 要 】

In this work we calculate the rapidity distribution and the total cross section for the diffractive photoproduction of J/ψ in PbPb collisions in LHC energies. We use the color dipole formalism and different models for the forward dipole-proton scattering amplitude (N) which take into account nonlinear effects. Using always the same model for the wave function of the vector meson, we estimate the theoretical uncertainty related to the choice of the model for N. We compare our results with available data from ALICE [1, 2] and present our prediction for higher enegies.