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arXiv · hep-ph/0602009

Do glueballs contribute in heavy ion collisions?

M. L. L. da Silva·D. Hadjimichef·C. A. Z. Vasconcellos·B. E. J. Bodmann
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Abstract

In heavy ion collision simulations many hadron states and/or parton degrees of freedom are included in order to obtain the observables. Meson spectroscopy, for example, considers the $0^{++}$ meson as a mixture of $q\bar{q}$ and glue. This fact is usually not considered in heavy ion collision physics. In the present work we consider two extreme possibilities for the constitution of the $0^{++}$ meson, either as a pure glueball or as $q\bar{q}$-meson. The scattering amplitude and cross-sections with constituent interchange are determined for the two situations. The comparison showed that the glueball-glueball elastic scattering cross-section for a color singlet state is between one to two orders of magnitude smaller than the corresponding $q\bar{q}$ state. The $2^{++}$ glueball-glueball interaction is also evaluated with similar behavior. Thus, glueball-glueball scattering is not very likely to introduce significant changes in heavy ion collision observables.

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M. L. L. da Silva, D. Hadjimichef, C. A. Z. Vasconcellos, B. E. J. Bodmann. 2006-02-01. Do glueballs contribute in heavy ion collisions?. https://doi.org/10.1088/0954-3899%2F32%2F4%2F006

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