Dielectron production in p+Be and Ca+Ca collisions at the Bevalac
Abstract
We discuss the physics objectives of the DLS program with some emphasis on the possible use of dileptons as a probe of pion dynamics in nuclear matter. Data on p + Be reactions at 1-5 GeV and Ca + Ca at 1 GeV/A are presented. The observation of a structure at twice the pion mass in the e/sup +/e/sup /minus// invariant mass spectra above 2 GeV beam energy and the excitation function for the p + Be reaction suggest that pion annihilation is the main dielectron source above 2 GeV. The dielectron mass spectrum from Ca + Ca at 1 GeV/A exhibits an inverse slope larger than the one from p + Be at the same beam energy. 14 refs., 9 figs., 1 tab.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Berkeley Lab., CA (USA)
- OSTI Identifier:
- 6206141
- Report Number(s):
- LBL-26460; CONF-8811171-2
ON: DE89007491
- DOE Contract Number:
- AC03-76SF00098; FG02-88ER40413; FG03-88ER40424; FG05-88ER40445
- Resource Type:
- Conference
- Resource Relation:
- Conference: 17. INS international symposium on nuclear physics at intermediate energies, Tokyo, Japan, 15 Nov 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BERYLLIUM 9 TARGET; PROTON REACTIONS; CALCIUM 40 TARGET; CALCIUM 40 REACTIONS; ELECTRONS; PAIR PRODUCTION; CROSS SECTIONS; ELECTRON SPECTROMETERS; MUON PAIRS; NUCLEAR MATTER; BARYON REACTIONS; CHARGED-PARTICLE REACTIONS; ELEMENTARY PARTICLES; FERMIONS; HADRON REACTIONS; HEAVY ION REACTIONS; INTERACTIONS; LEPTONS; MATTER; MEASURING INSTRUMENTS; NUCLEAR REACTIONS; NUCLEON REACTIONS; SPECTROMETERS; TARGETS; 651320* - Nuclear Properties & Reactions, A=6-19, Experimental; 651520 - Nuclear Properties & Reactions, A=39-58, Experimental; 645102 - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties
Citation Formats
Roche, G. Dielectron production in p+Be and Ca+Ca collisions at the Bevalac. United States: N. p., 1988.
Web.
Roche, G. Dielectron production in p+Be and Ca+Ca collisions at the Bevalac. United States.
Roche, G. 1988.
"Dielectron production in p+Be and Ca+Ca collisions at the Bevalac". United States. https://www.osti.gov/servlets/purl/6206141.
@article{osti_6206141,
title = {Dielectron production in p+Be and Ca+Ca collisions at the Bevalac},
author = {Roche, G},
abstractNote = {We discuss the physics objectives of the DLS program with some emphasis on the possible use of dileptons as a probe of pion dynamics in nuclear matter. Data on p + Be reactions at 1-5 GeV and Ca + Ca at 1 GeV/A are presented. The observation of a structure at twice the pion mass in the e/sup +/e/sup /minus// invariant mass spectra above 2 GeV beam energy and the excitation function for the p + Be reaction suggest that pion annihilation is the main dielectron source above 2 GeV. The dielectron mass spectrum from Ca + Ca at 1 GeV/A exhibits an inverse slope larger than the one from p + Be at the same beam energy. 14 refs., 9 figs., 1 tab.},
doi = {},
url = {https://www.osti.gov/biblio/6206141},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 1988},
month = {Thu Dec 01 00:00:00 EST 1988}
}
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.