Thermal Hadron Production by QCD Hawking Radiation

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The QCD counterpart of Hawking radiation from black holes leads to thermal hadron production in high energy collisions, from e+e- annihilation to heavy ion interactions. This hadronic radiation is formed by tunnelling through the event horizon of colour confinement and is 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''.