On the absorption and production cross sections of $K$ and $K^{\ast }$

Abstract

We have computed the isospin and spin averaged cross sections of the processes $\pi K^{\ast }\to \rho K$ and $\rho K^{\ast }\to \pi K$, which are crucial in the determination of the abundances of $K^{\ast }$ and $K$ in heavy ion collisions. Improving previous calculations, we have considered several mechanisms which were missing, such as the exchange of axial and vector resonances ($K_1(1270)$, $K_2^{\ast }(1430)$, $h_1(1170)$, etc...) and also other processes such as $\pi K^{\ast }\to \omega K,\varphi K$ and $\omega K^{\ast },\varphi K^{\ast }\to \pi K$. We find that some of these mechanisms give important contributions to the cross section. Our results also suggest that, in a hadron gas, $K^{\ast }$ production might be more important than its absorption.

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Cited by in corpus (7)

• Multiplicity of the doubly charmed state $T_{cc}^{+}$ in heavy-ion collisions
• Interactions of the doubly charmed state $T_{cc}^{+}$ with a hadronic medium
• Understanding the $K^{\ast }/K$ ratio in heavy ion collisions
• On the two-body decay processes of the predicted three-body $K^{\ast }(4307)$ resonance
• The $D^{\ast }/D$ ratio in heavy ion collisions
• Inelastic Meson-Meson Scattering in Hadronic Matter
• Cross sections for inelastic $K$+$\varphi$ scattering