${\rm Y}$ absorption in hadronic matter

Abstract

The cross sections of ${\rm Y}$ absorption by $\pi$ and $\rho$ mesons are evaluated in a meson-exchange model. Including form factors with a cutoff parameter of 1 or 2 GeV, we find that due to the large threshold of these reactions the thermal average of their cross sections is only about 0.2 mb at a temperature of 150 MeV. Our results thus suggest that the absorption of directly produced ${\rm Y}$ by hadronic comovers in high energy heavy ion collisions is unimportant.

11 pages, revtex, 3 figures, added references and discussion on higher BBbar states

References in corpus (5)

• A Multi-Phase Transport model for nuclear collisions at RHIC
• Model for $J/\psi$ absorption in hadronic matter
• Colour Deconfinement in Nuclear Collisions
• Charmonium dissociation in hadronic matter
• Hadronic scattering of charmed mesons

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