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- W2009280070 abstract "The thermal multihadron production observed in different high energy collisions poses many basic problems: why do even elementary,<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M1><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>-</mml:mo></mml:mrow></mml:msup></mml:math>and hadron-hadron, collisions show thermal behaviour? Why is there in such interactions a suppression of strange particle production? Why does the strangeness suppression almost disappear in relativistic heavy ion collisions? Why in these collisions is the thermalization time less than<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M2><mml:mo>≃</mml:mo><mml:mn>0.5</mml:mn></mml:math> fm/c? We show that the recently proposed mechanism of thermal hadron production through Hawking-Unruh radiation can naturally answer the previous questions. Indeed, the interpretation of quark ( q )-antiquark (<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M3><mml:mrow><mml:mover accent=true><mml:mrow><mml:mi>q</mml:mi></mml:mrow><mml:mo>̅</mml:mo></mml:mover></mml:mrow></mml:math>) pairs production, by the sequential string breaking, as tunneling through the event horizon of colour confinement leads to thermal behavior with a universal temperature,<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M4><mml:mi>T</mml:mi><mml:mo>≃</mml:mo><mml:mn>170</mml:mn></mml:math> Mev, related to the quark acceleration, a , by<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M5><mml:mi>T</mml:mi><mml:mo>=</mml:mo><mml:mi>a</mml:mi><mml:mo>/</mml:mo><mml:mn>2</mml:mn><mml:mi>π</mml:mi></mml:math>. The resulting temperature depends on the quark mass and then on the content of the produced hadrons, causing a deviation from full equilibrium and hence a suppression of strange particle production in elementary collisions. In nucleus-nucleus collisions, where the quark density is much bigger, one has to introduce an average temperature (acceleration) which dilutes the quark mass effect and the strangeness suppression almost disappears." @default.
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- W2009280070 date "2014-01-01" @default.
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- W2009280070 title "Hawking-Unruh Hadronization and Strangeness Production in High Energy Collisions" @default.
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- W2009280070 doi "https://doi.org/10.1155/2014/376982" @default.
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