Hadronic scattering effects on ψ(2S) suppression in relativistic heavy-ion collisions
Year: 2025
Type: article
Abstract: In this work we estimate the N ψ ( 2 S ) / N J / ψ yield ratio in heavy-ion collisions, considering the interactions of the ψ ( 2 S ) and J / ψ states with light mesons in the hadron gas formed at the late stages of these collisions. Starting from the appropriate effective Lagrangians, we first compute the thermally-averaged cross sections for the production and absorption of the mentioned states, and then use them as input in the rate equations to determine the time evolution of N ψ ( 2 S ) , N J / ψ and N ψ ( 2 S ) / N J / ψ . The main conclusion of our study is that the ψ ( 2 S ) and J / ψ multiplicities do not change much in the hadron gas phase and that the ψ ( 2 S ) is more absorbed than the J / ψ . The obtained final ratio is in agreement with recent experimental data.
Source: Physics Letters B
Authors: L.M. Abreu, F.S. Navarra, H.P.L. Vieira
Institutions: Universidade Federal da Bahia, Universidade de São Paulo
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4408810987