# Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions

Castorina P, Satz H (2014)

Advances in High Energy Physics 2014.

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Abstract

The thermal multihadron production observed in different high energycollisions poses many basic problems: why do even elementary, $e^+e^-$ andhadron-hadron, collisions show thermal behaviour? Why is there in suchinteractions a suppression of strange particle production? Why does thestrangeness suppression almost disappear in relativistic heavy ion collisions?Why in these collisions is the thermalization time less than $\simeq 0.5$ fm/c?We show that the recently proposed mechanism of thermal hadron productionthrough Hawking-Unruh radiation can naturally answer the previous questions.Indeed, the interpretation of quark- antiquark pairs production, by thesequential string breaking, as tunneling through the event horizon of colourconfinement leads to thermal behavior with a universal temperature, $T \simeq170$ Mev,related to the quark acceleration, a, by $T=a/2\pi$. The resultingtemperature depends on the quark mass and then on the content of the producedhadrons, causing a deviation from full equilibrium and hence a suppression ofstrange particle production in elementary collisions. In nucleus-nucleuscollisions, where the quark density is much bigger, one has to introduce anaverage temperature (acceleration) which dilutes the quark mass effect and thestrangeness suppression almost disappears.

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Open Access publishing charge funded by SCOAP$^3$ – Sponsoring Consortium for Open Access Publishing in Particle Physics and Bielefeld University.

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Castorina P, Satz H. Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions.

*Advances in High Energy Physics*. 2014;2014.Castorina, P., & Satz, H. (2014). Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions.

*Advances in High Energy Physics*,*2014*.Castorina, P., and Satz, H. (2014). Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions.

*Advances in High Energy Physics*2014.Castorina, P., & Satz, H., 2014. Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions.

*Advances in High Energy Physics*, 2014.P. Castorina and H. Satz, “Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions”,

*Advances in High Energy Physics*, vol. 2014, 2014.Castorina, P., Satz, H.: Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions. Advances in High Energy Physics. 2014, (2014).

Castorina, Paolo, and Satz, Helmut. “Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions”.

*Advances in High Energy Physics*2014 (2014).
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arXiv 1403.3541

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SCOAP3 2388