Model for J/psi absorption in hadronic matter
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Date
2000
Authors
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Publisher
American Physical Society
Abstract
The cross sections for J/psi absorption by pi and rho mesons are studied in a meson-exchange model that includes not only pseudoscalar-pseudoscalar-vector-meson couplings but also three-vector-meson and four-point couplings. We find that they are much larger than in a previous study where only pseudoscalar-pseudoscalar-vector-meson couplings were considered. Including form factors at interaction vertices, the J/psi absorption cross sections sigma(pi psi) and sigma(rho psi) are found to have values on the order of 7 mb and 3 mb, respectively. Their thermal averages in hadronic matter at temperature T = 150 MeV are, respectively, about 1 mb and 2 mb.
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Keywords
QUARK-GLUON PLASMA, SUPER PROTON SYNCHROTRON, NUCLEAR COLLISIONS, VECTOR-MESONS, SPS ENERGIES, LIGHT MESONS, HEAVY MESONS, SUPPRESSION, QCD, 200-GEV/NUCLEON, Physics
Citation
Z. W. Lin and Che Ming Ko. Phys.Rev.C 62 034903 2000. "Copyright (2000) by the American Physical Society."