Abstract.
Multihadron production in high energy collisions, from e+e- annihilation to heavy ion interactions, shows remarkable thermal behaviour, specified by a universal “Hagedorn” temperature. We argue that this hadronic radiation is formed by tunneling through the event horizon of colour confinement, i.e., that it is the QCD counterpart of Hawking-Unruh radiation from black holes. It is shown to be emitted at a universal temperature TH ≃ (σ/2 π)1/2, where σ denotes the string tension. Since the event horizon does not allow information transfer, the radiation is thermal “at birth”.
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Satz, H. The origin of thermal hadron production. Eur. Phys. J. Spec. Top. 155, 167–175 (2008). https://doi.org/10.1140/epjst/e2008-00599-8
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DOI: https://doi.org/10.1140/epjst/e2008-00599-8