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Nature of Chiral Transition in QCD and Sigma Meson

Teiji Kunihiro
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Abstract

After showing the characteristic features of the chiral transition in QCD at finite temperature $T$, we note the significance of the sigma-mesonic mode in the chiral transition : Sigma meson may be regarded as the "Higgs particle" in QCD, though the existence of such a mode in the real world is still unclear. We show the properties of the sigma meson in hot and/or hadronic matter, from which we propose experiments to reveal the existence the sigma meson clearly; the experiments include relativistic heavy-ion collisions to create hot hadronic matter, and electro-production in heavy nuclei.

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Teiji Kunihiro. 2000-06-18. Nature of Chiral Transition in QCD and Sigma Meson. https://arxiv.org/abs/nucl-th/0006035

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