Recent Results from RHIC&Some Lessons for Cosmic-RayPhysicists

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The Relativistic Heavy Ion Collider (RHIC) studies nuclear matter under a variety of conditions. Cold nuclear matter is probed with deuteron-gold collisions, while hot nuclear matter (possibly a quark-gluon plasma (QGP)) is created in heavy-ion collisions. The distribution of spin in polarized nucleons is measured with polarized proton collisions, and photoproduction is studied using the photons that accompany heavy nuclei. The deuteron-gold data shows less forward particle production than would be expected from a superposition of pp collisions, as expected due to saturation/shadowing. Particle production in AA collisions is well described by a model of an expanding fireball in thermal ... continued below

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Klein, Spencer R. October 1, 2006.

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The Relativistic Heavy Ion Collider (RHIC) studies nuclear matter under a variety of conditions. Cold nuclear matter is probed with deuteron-gold collisions, while hot nuclear matter (possibly a quark-gluon plasma (QGP)) is created in heavy-ion collisions. The distribution of spin in polarized nucleons is measured with polarized proton collisions, and photoproduction is studied using the photons that accompany heavy nuclei. The deuteron-gold data shows less forward particle production than would be expected from a superposition of pp collisions, as expected due to saturation/shadowing. Particle production in AA collisions is well described by a model of an expanding fireball in thermal equilibrium. Strong hydrodynamic flow and jet quenching shows that the produced matter interacts very strongly. These phenomena are consistent with new non-perturbative interactions near the transition temperature to the QGP. This report discusses these results, and their implications for cosmic-ray physicists.

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  • 14th Intl. Symp. on Very High Energy Cosmic RayInteractions, WeiHai, China, August 15-22, 2006

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  • Report No.: LBNL--62046
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 902025
  • Archival Resource Key: ark:/67531/metadc886524

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  • October 1, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Sept. 30, 2016, 12:43 p.m.

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Klein, Spencer R. Recent Results from RHIC&Some Lessons for Cosmic-RayPhysicists, article, October 1, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc886524/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.