Nuclear physics at PEP [electronic resource] : Recent results using the Time Projection Chamber
- Livermore, Calif : Lawrence Livermore National Laboratory, 1987.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 10 : digital, PDF file
- Additional Creators:
- Lawrence Livermore National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- A preliminary result on Bose-Einstein correlations is reported using the PEP-4 Time Projection Chamber facility. The data, from scattering 14.5 GeV electrons on nuclei, was taken at the Stanford Linear Accelerator Center positron-electron (PEP) storage ring. Bose-Einstein (BE) correlations were measured from events having identified like-sign pion pairs. The particle identification and tracking capability of the Time Projection Chamber (TPC) was used to select like-sign pion pair events. The resulting correlation function for the data was fitted to a gaussian form R(q) = 1 + lambda exp(-q/sup 2/sigma/sup 2/) where q is the relative four-momentum difference of the pions. The fitted value to the chaoticity is lambda = 0.37 +- 0.19 and sigma = 1.37 +- 0.41 fermi. This result agrees with that from e/sup +/e/sup -/ annihilation data taken with the TPC. The operation of the TPC and the analysis of the data is explained. The feasibility of similar detectors for doing high energy electron scattering on nuclei at PEP is briefly discussed. 9 refs., 8 figs.
- Report Numbers:
- E 1.99:ucrl-96590
E 1.99: conf-870165-5
- Published through SciTech Connect.
Workshop on electronuclear physics with internal targets, Stanford, CA, USA, 5 Jan 1987.
- Funding Information:
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