Published October 2018 | Version v1
Journal article

Impact of unitarization on the J/ψ-light meson cross section

  • 1. Instituto de Física, Universidade Federal da Bahia, 40170-115, Salvador, BA (Brazil)
  • 2. Centro Brasileiro de Pesquisas Físicas/MCTI, 22290-180, Rio de Janeiro, RJ (Brazil)

Description

Hidden charm mesons continue playing an essential role as relevant probes to understand the evolution of partonic matter. It is expected that the charmonia that survived the quark-gluon plasma phase suffer collisions with other particles composing the hadronic matter. In this work, we intend to contribute on this subject by presenting an updated study about the interactions of J/ψ with surrounding hadronic medium. The meson-meson interactions are described with a SU(4) effective Lagrangian, and within the framework of unitarized coupled channel amplitudes projected onto s-wave. The symmetry is explicitly broken to SU(3) by suppression of the interactions driven by charmed mesons. We calculate the cross sections for J/ψ scattering by light pseudoscalar mesons (π,K,η) and vector mesons (ρ,K,ω), as well as their inverse processes. Keeping the validity of this present approach in the low CM energy range, the most relevant channels are evaluated and a comparison of the findings with existing literature is performed.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.nuclphysa.2018.08.001

Additional details

Additional titles

Augmented title (English)
KEYWORDS: CHIRAL PERTURBATION THEORY;CHARMONIA STATES;MESON-MESON INTERACTIONS

Identifiers

DOI
10.1016/j.nuclphysa.2018.08.001;
arXiv
arXiv:1808.02115v1;
PII
S0375947418301374;

Publishing Information

Journal Title
Nuclear Physics. A
Journal Volume
978
Journal Page Range
p. 107-122
ISSN
0375-9474
CODEN
NUPABL

Optional Information

Notes
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