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$Υ$ absorption in hadronic matter

Ziwei Lin·C. M. Ko
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Abstract

The cross sections of $Υ$ absorption by $π$ and $ρ$ 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 $Υ$ by hadronic comovers in high energy heavy ion collisions is unimportant.

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Ziwei Lin, C. M. Ko. 2001-04-03. $Υ$ absorption in hadronic matter. https://doi.org/10.1016/s0370-2693(01)00092-2

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