Eur. Phys. J. A (2021) 57: 163
https://doi.org/10.1140/epja/s10050-021-00478-9

Regular Article - Theoretical Physics

Quarkonium interactions with (hot) hadronic matter

Instituto de Física, Universidade Federal da Bahia, Campus Universitário de Ondina, 40170-115, Salvador, Bahia, Brazil

^a luciano.abreu@ufba.br

Received: 3 March 2021
Accepted: 28 April 2021
Published online: 13 May 2021

Abstract

In this work, we present an updated study about the interactions of quarkonia with surrounding hadronic medium. The meson–meson interactions are described with a chiral effective Lagrangian within the framework of unitarized coupled channel amplitudes. In particular, we extend a previous work performed in the charmonium sector by calculating the cross-sections for $\mathrm{{\rm Y}}$ scattering by light pseudoscalar mesons ($\pi ,K,\eta$) and vector mesons ($\rho ,K^{\ast },\omega$). We evaluate the relevant channels and compare the results with existing literature. The analysis is completed by including the finite-temperature effects in the unitarized scattering amplitudes for both quarkonium and bottomonium sectors.