Ultra-peripheral collisions with STAR at RHIC

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The strong electromagnetic fields of heavy nuclei can produce a wide variety of two-photon and photonuclear reactions at relativistic ion colliders. We present recent results from the STAR collaboration on these ''ultra-peripheral'' interactions, focusing on vector meson production and interferometry, and on e{sup +}e{sup -} pair production. The vector meson interferometry occurs because of the symmetric initial state: nucleus 1 can emit a photon which scatters from nucleus 2, emerging as a vector meson, or vice-versa. The two processes are indistinguishable, and so interfere, even though the production points are separated enough that the produced mesons decay before their wave ... continued below

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9 pages

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Klein, Spencer & Collaboration, STAR October 22, 2003.

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The strong electromagnetic fields of heavy nuclei can produce a wide variety of two-photon and photonuclear reactions at relativistic ion colliders. We present recent results from the STAR collaboration on these ''ultra-peripheral'' interactions, focusing on vector meson production and interferometry, and on e{sup +}e{sup -} pair production. The vector meson interferometry occurs because of the symmetric initial state: nucleus 1 can emit a photon which scatters from nucleus 2, emerging as a vector meson, or vice-versa. The two processes are indistinguishable, and so interfere, even though the production points are separated enough that the produced mesons decay before their wave functions can overlap, so the system can be used for interesting tests of quantum mechanics.

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9 pages

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INIS; OSTI as DE00829997

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  • Small-x and Diffraction 2003, Batavia, IL (US), 09/17/2003--09/20/2003

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  • Report No.: LBNL--55035
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 829997
  • Archival Resource Key: ark:/67531/metadc783231

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  • October 22, 2003

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  • Dec. 3, 2015, 9:30 a.m.

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  • Sept. 1, 2016, 7:01 p.m.

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Klein, Spencer & Collaboration, STAR. Ultra-peripheral collisions with STAR at RHIC, article, October 22, 2003; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc783231/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.