Nuclear Coulomb Field Effects in Two-Pion Bose-Einstein Correlations

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Differences are investigated in pion source sizes derived using {pi}{sup +}{pi}{sup +} and {pi}{sup -}{pi}{sup -} pairs in the large statistics data set collected with the E866 Forward Spectrometer for central Au+Au collisions at 11.6 A. {center_dot} GeV/c in AGS Experiment E866. These differences in source radii are interpreted using a simple classical description for the Coulomb and the transverse-momentum (p{sub T}) dependent source radius parameters. An estimated effective net charge responsible for the distortion is considerably smaller than the expected total projectile participant protons, which suggests that the system undergoes a rapid expansion in the longitudinal direction before freezeout. ... continued below

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6 p.

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Lee, J. H. & Chasman, C. March 21, 1999.

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Description

Differences are investigated in pion source sizes derived using {pi}{sup +}{pi}{sup +} and {pi}{sup -}{pi}{sup -} pairs in the large statistics data set collected with the E866 Forward Spectrometer for central Au+Au collisions at 11.6 A. {center_dot} GeV/c in AGS Experiment E866. These differences in source radii are interpreted using a simple classical description for the Coulomb and the transverse-momentum (p{sub T}) dependent source radius parameters. An estimated effective net charge responsible for the distortion is considerably smaller than the expected total projectile participant protons, which suggests that the system undergoes a rapid expansion in the longitudinal direction before freezeout. This picture is consistent with the results derived from the {pi}{sup -}/{pi}{sup +} singles yield ratios for the same reactions.

Physical Description

6 p.

Notes

INIS; OSTI as DE00770819

Medium: P; Size: 6 pages

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  • Relativistic Heavy Ion Mini-Symposium at the APS Centennial Meeting, Atlanta, GA (US), 03/21/1999--03/25/1999

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  • Report No.: BNL-66647
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 770819
  • Archival Resource Key: ark:/67531/metadc716956

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • March 21, 1999

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 11, 2017, 1:07 p.m.

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Lee, J. H. & Chasman, C. Nuclear Coulomb Field Effects in Two-Pion Bose-Einstein Correlations, article, March 21, 1999; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc716956/: accessed April 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.