Spin measurements in high -t exclusive photoreactions

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The approximate validity of the constituent counting rules to few GeV photoreactions has been known for many years. It is now generally accepted that perturbative QCD, which leads to these rules, cannot be applicable in this low energy and momentum transfer regime. Cross section and polarization measurements now underway show promise to lead to the underlying physics. Initial experiments on deuteron photodisintegration and pion electroproduction are now in progress, and are expected to be followed by several other measurements.

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8 pages

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Gilman, Ron May 1, 1999.

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Description

The approximate validity of the constituent counting rules to few GeV photoreactions has been known for many years. It is now generally accepted that perturbative QCD, which leads to these rules, cannot be applicable in this low energy and momentum transfer regime. Cross section and polarization measurements now underway show promise to lead to the underlying physics. Initial experiments on deuteron photodisintegration and pion electroproduction are now in progress, and are expected to be followed by several other measurements.

Physical Description

8 pages

Source

  • 6th INT/Jlab Workshop On Exclusive And Semiexclusive Processes At High Momentum Transfer, Newport News, VA (US), 05/19/1999--05/23/1999; Other Information: PROCEEDINGS. Edited by C. Carlson, A. Radyushkin. Singapore, World Scientific, 2000. 343p. (INP 10); PBD: 1 May 1999; PBD: 1 May 1999

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  • Report No.: JLAB-PHY-99-45
  • Report No.: DOE/ER/40150-2081
  • Grant Number: AC05-84ER40150
  • Grant Number: NSF Grant PHY 9803860
  • Office of Scientific & Technical Information Report Number: 795079
  • Archival Resource Key: ark:/67531/metadc741452

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  • May 1, 1999

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

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  • Feb. 5, 2016, 8:37 p.m.

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Gilman, Ron. Spin measurements in high -t exclusive photoreactions, article, May 1, 1999; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc741452/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.